CVE-2026-0770
published 2026-01-23CVE-2026-0770: Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers…
PriorityP1100critical9.8CVSS 3.0
AVNACLPRNUINSUCHIHAH
KEVITWEXPLOITInitial access
CISA Known Exploited Vulnerabilitydue 2026-07-24
Exploited in the wild
EPSS
63.42%
99.2th percentile
Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the exec_globals parameter provided to the validate endpoint. The issue results from the inclusion of a resource from an untrusted control sphere. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-27325.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| langflow | langflow | <= 1.7.3 | — |
| langflow | langflow | — | — |
| langflow | langflow | 0 – 1.7.3 | — |
Detection & IOCsextracted from sources · hover to see the quote
commandPOST /api/v1/validate/code HTTP/1.1
Host: {{Hostname}}
Content-Type: application/json
Authorization: Bearer {{token}}
{"code":"\ndef exploit(\n _=( lambda r: (_ for _ in ()).throw(Exception(f\"OUTPUT:\\n{r.stdout}{r.stderr}\")) )(\n __import__('subprocess').run('cat /etc/passwd', shell=True, capture_output=True, text=True)\n )\n):\n pass\n"}
yara
id: CVE-2026-0770 info: name: Langflow < 1.3.0 - Remote Code Execution via validate_code() exec() author: affix severity: critical tags: cve,cve2026,langflow,rce,authenticated,vuln,vkev
- →Monitor for POST requests to /api/v1/validate/code containing '__import__' or 'subprocess' in the JSON body, which is the exploit payload pattern used to achieve RCE via the exec_globals parameter. ↗
- →Detect unauthenticated exploitation attempts by monitoring GET requests to /api/v1/auto_login followed immediately by POST requests to /api/v1/validate/code — this two-step sequence is the unauthenticated RCE attack chain. ↗
- →Alert on Authorization headers using the misspelled bearer scheme 'Bearare' (not 'Bearer'), which is a fingerprint of the known exploit tool for CVE-2026-0770. ↗
- →The Nuclei PoC template matches a successful exploit by checking the HTTP response body for the regex 'root:.*:0:0:' (contents of /etc/passwd), indicating confirmed RCE as root. ↗
- →Authentication is not required to exploit this vulnerability; Langflow enables unauthenticated auto-login by default, so a single unauthenticated request is sufficient to obtain a valid session token before proceeding with exploitation. ↗
- →The vulnerable endpoint is /api/v1/validate/code; the flaw exists within the handling of the exec_globals parameter provided to the validate endpoint, allowing inclusion of functionality from an untrusted control sphere. ↗
- ·The exploit works without authentication only when Langflow's auto-login feature is enabled (the default configuration). If auto-login is disabled, credentials are required, reducing the attack surface. ↗
- ·Successful exploitation results in code execution in the context of root, meaning the Langflow process itself runs as root — a significant privilege escalation risk that amplifies impact. ↗
- ·The exploit script defaults to the 'id' command if no command is specified, and the PoC template uses 'cat /etc/passwd' — defenders should watch for these specific commands in process trees spawned by Langflow. ↗
CVSS provenance
nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vulncheck9.8CRITICAL
cisa9.8CRITICAL
vendor_redhat7.8HIGH
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CISA
Langflow Inclusion of Functionality from Untrusted Control Sphere Vulnerability
cisa·2026-07-21·CVSS 9.8
CVE-2026-0770 [CRITICAL] CWE-829 Langflow Inclusion of Functionality from Untrusted Control Sphere Vulnerability
Vulnerability: Langflow Inclusion of Functionality from Untrusted Control Sphere Vulnerability
Affected: Langflow Langflow
Langflow contains an inclusion of functionality from untrusted control sphere vulnerability that allows remote attackers to execute arbitrary code on affected installations.
Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guideli
Red Hat
cups: OpenPrinting CUPS: Denial of Service via path traversal in RSS notifier
vendor_redhat·2026-04-03·CVSS 6.5
CVE-2026-34978 [MEDIUM] CWE-22 cups: OpenPrinting CUPS: Denial of Service via path traversal in RSS notifier
cups: OpenPrinting CUPS: Denial of Service via path traversal in RSS notifier
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly a
Red Hat
libvirt: Integer overflow in NodeGetFreePages RPC handler leading to heap buffer overflow
vendor_redhat·2025-08-12·CVSS 7.8
CVE-2026-18917 [HIGH] CWE-190 libvirt: Integer overflow in NodeGetFreePages RPC handler leading to heap buffer overflow
libvirt: Integer overflow in NodeGetFreePages RPC handler leading to heap buffer overflow
A flaw was found in libvirt. An unprivileged local user could exploit an integer overflow vulnerability in the NodeGetFreePages RPC handler. This flaw allows crafted values to bypass a size check, leading to an undersized memory buffer. Subsequently, real NUMA node data can overwrite this buffer. This heap buffer overflow can corrupt the root libvirt daemon's memory, potentially leading to a denial of service or local privilege escalation.
Mitigation: Restrict access to the libvirt read-only Unix socket to limit which local users can reach the vulnerable RPC handler. In /etc/libvirt/libvirtd.conf, set unix_sock_ro_perms to "0770" (or "0700") and configure unix_sock_group to a group containing only t
VulDB
Langflow exec_globals inclusion of functionality from untrusted control sphere (EDB-52597)
vuldb·2026-07-21·CVSS 9.8
CVE-2026-0770 [CRITICAL] Langflow exec_globals inclusion of functionality from untrusted control sphere (EDB-52597)
A vulnerability classified as very critical has been found in Langflow. Affected is the function exec_globals. This manipulation causes inclusion of functionality from untrusted control sphere.
The identification of this vulnerability is CVE-2026-0770. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.
OSV
Langflow affected by Remote Code Execution via validate_code() exec()
osv·2026-01-23
CVE-2026-0770 [HIGH] Langflow affected by Remote Code Execution via validate_code() exec()
Langflow affected by Remote Code Execution via validate_code() exec()
Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the exec_globals parameter provided to the validate endpoint. The issue results from the inclusion of a resource from an untrusted control sphere. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-27325.
GHSA
Langflow affected by Remote Code Execution via validate_code() exec()
ghsa·2026-01-23
CVE-2026-0770 [HIGH] CWE-829 Langflow affected by Remote Code Execution via validate_code() exec()
Langflow affected by Remote Code Execution via validate_code() exec()
Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the exec_globals parameter provided to the validate endpoint. The issue results from the inclusion of a resource from an untrusted control sphere. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-27325.
VulnCheck
langflow langflow Inclusion of Functionality from Untrusted Control Sphere
vulncheck·2026·CVSS 9.8
CVE-2026-0770 [CRITICAL] langflow langflow Inclusion of Functionality from Untrusted Control Sphere
langflow langflow Inclusion of Functionality from Untrusted Control Sphere
Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the exec_globals parameter provided to the validate endpoint. The issue results from the inclusion of a resource from an untrusted control sphere. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-27325.
Affected: langflow langflow
Required Action: Apply remediations or mitigations per vendor instructions or discontinue use of the product
No detection rules found.
Exploit-DB
Langflow 1.3.0 - Remote Code Execution
exploitdb·2026-05-29·CVSS 9.8
CVE-2026-0770 [CRITICAL] Langflow 1.3.0 - Remote Code Execution
Langflow 1.3.0 - Remote Code Execution
---
# Exploit Title: Langflow 1.3.0 - Remote Code Execution
# Fofa-dork: title="Langflow"
# Shodan-dork: title:"Langflow"
# Date: 23-05-2026
# Exploit Author: Diamorphine
# Venodor Homepage: https://www.langflow.org/
# Software Link: https://github.com/langflow-ai/langflow
# Version: 1.2.0
# Tested on: Debian
# CVE : CVE-2026-0770
# Description: Langflow contains a remote code execution caused by inclusion of functionality from untrusted control sphere in the exec_globals parameter at the validate endpoint, letting remote attackers execute arbitrary code as root, exploit requires no authentication.
# Usage: CVE-2026-0770.py -u 127.0.0.1 [-l USERNAME] [-p PASSWORD] [-c COMMAND]
import httpx
import asyncio
import subprocess
import json
import sys
im
Nuclei
Langflow < 1.3.0 - Remote Code Execution via validate_code() exec()
nuclei·CVSS 9.8
CVE-2026-0770 [CRITICAL] Langflow < 1.3.0 - Remote Code Execution via validate_code() exec()
Langflow < 1.3.0 - Remote Code Execution via validate_code() exec()
Langflow contains a remote code execution caused by inclusion of functionality from untrusted control sphere in the exec_globals parameter at the validate endpoint, letting remote attackers execute arbitrary code as root, exploit requires no authentication.
Template:
id: CVE-2026-0770
info:
name: Langflow < 1.3.0 - Remote Code Execution via validate_code() exec()
author: affix
severity: critical
description: |
Langflow contains a remote code execution caused by inclusion of functionality from untrusted control sphere in the exec_globals parameter at the validate endpoint, letting remote attackers execute arbitrary code as root, exploit requires no authentication.
impact: |
Remote attackers can execute arbitrary code as
Hackernews
Hackers Exploit Windmill Flaw to Read Arbitrary Server Files Without Authentication
blogs_hackernews·2026-07-22·CVSS 7.5
CVE-2026-29059 [HIGH] Hackers Exploit Windmill Flaw to Read Arbitrary Server Files Without Authentication
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## Hackers Exploit Windmill Flaw to Read Arbitrary Server Files Without Authentication
A high-severity security flaw impacting open-source developer platform Windmill has come under active exploitation in the wild, per VulnCheck.
The vulnerability in question is CVE-2026-29059 (CVSS score: 7.5), a case of unauthenticated path traversal impacting Windmill's "get_log_file" endpoint ("/api/w/{workspace}/jobs_u/get_log_file/{filename}").
"The filename parameter is concatenated into a file path without sanitization, allowing an attacker to read arbitrary files on the server using ../ sequences," according to an advisory published b
Hackernews
CISA Adds 4 Actively Exploited Adobe, Joomla, and Langflow Flaws to KEV
blogs_hackernews·2026-07-08·CVSS 10.0
CVE-2026-48282 [CRITICAL] CISA Adds 4 Actively Exploited Adobe, Joomla, and Langflow Flaws to KEV
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## CISA Adds 4 Actively Exploited Adobe, Joomla, and Langflow Flaws to KEV
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added four security flaws to its Known Exploited Vulnerabilities ( KEV ) catalog, citing evidence of active exploitation.
The vulnerabilities are listed below -
CVE-2026-48282 (CVSS score: 10.0) - A path traversal vulnerability in Adobe ColdFusion that could lead to arbitrary code execution in the context of the current user.
CVE-2026-56290 (CVSS score: 10.0) - An improper access control vulnerability in Joomlack Page Builder that could allow for remote code execution via unaut
Hackernews
Unpatched Langflow Flaw CVE-2026-5027 Exploited for Unauthenticated RCE
blogs_hackernews·2026-06-10·CVSS 8.8
CVE-2026-5027 [HIGH] Unpatched Langflow Flaw CVE-2026-5027 Exploited for Unauthenticated RCE
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## Unpatched Langflow Flaw CVE-2026-5027 Exploited for Unauthenticated RCE
A high-severity unpatched security flaw in Langflow, an open-source low-code platform to build artificial intelligence (AI) applications, has come under active exploitation in the wild, according to findings from VulnCheck.
The vulnerability in question is CVE-2026-5027 (CVSS score: 8.8), a case of path traversal that could allow an attacker to write files to arbitrary locations.
"The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the fi
Bleepingcomputer
Path traversal flaw in AI dev platform Langflow exploited in attacks
blogs_bleepingcomputer·2026-06-10·CVSS 9.8
CVE-2026-5027 [CRITICAL] Path traversal flaw in AI dev platform Langflow exploited in attacks
## Path traversal flaw in AI dev platform Langflow exploited in attacks
## Bill Toulas
CVE-2026-5027 is a high-severity path traversal flaw in Langflow's file upload functionality that fails to properly sanitize user-supplied filenames.
"The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../')," explains Tenable , which discovered the flaw at the start of the year.
Tenable publicly disclosed the issue on March 27, 2026, more than two months after initially reporting it to the Langflow team without receiving a response.
Although Tenable did not mention a fix in its advisory, Snyk Security reported on March 30, 2026, that t
Wiz
CVE-2026-0770 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 9.8
CVE-2026-0770 [CRITICAL] CVE-2026-0770 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-0770 :
Homebrew vulnerability analysis and mitigation
Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the exec_globals parameter provided to the validate endpoint. The issue results from the inclusion of a resource from an untrusted control sphere. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-27325.
Source : NVD
## 9.8
Score
Published January 23, 2026
Severity CRITICAL
CNA Score 9.8
Affected Technologies
Homebrew
LangFlow
Has Public
Greynoiseio
NoiseLetter February 2026
blogs_greynoiseio
NoiseLetter February 2026
CVE Disclosure Early Warning Get an early warning when traffic spikes indicate a high likelihood of new disclosures
Compromised Asset Detection Find out immediately if an asset communicates with a malicious IP address
Vulnerability Prioritization Get real-time insight into active exploitation trends to better understand risk and severity
SOC Efficiency Filter out noisy, low priority and false-positive alerts from mass internet scanners
Incident Investigation Add context to incidents to speed the determinations of scope and timelines
Threat Hunting Quickly identify anomalous behavior and enrich your threat hunting campaigns
Why GreyNoise
CVE Disclosure Early Warning Get an early warning when traffic spikes indicate a high likelihood of new disclosures
Compromised Asset Detection Fin
Wiz
CVE-2026-34978 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 6.5
CVE-2026-34978 [MEDIUM] CVE-2026-34978 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-34978 :
OpenPrinting CUPS vulnerability analysis and mitigation
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly av
Wiz
CVE-2026-23893 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 6.8
CVE-2026-23893 [MEDIUM] CVE-2026-23893 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-23893 :
NixOS vulnerability analysis and mitigation
openCryptoki is a PKCS#11 library and provides tooling for Linux and AIX. Versions 2.3.2 and above are vulnerable to symlink-following when running in privileged contexts. A token-group user can redirect file operations to arbitrary filesystem targets by planting symlinks in group-writable token directories, resulting in privilege escalation or data exposure. Token and lock directories are 0770 (group-writable for token users), so any token-group member can plant files and symlinks inside them. When run as root, the base code handling token directory file access, as well as several openCryptoki tools used for administrative purposes, may reset ownership or permissions on existing files inside the token directories. An attack
Bugzilla
CVE-2026-34978 cups: OpenPrinting CUPS: Denial of Service via path traversal in RSS notifier
bugzilla·2026-04-03·CVSS 6.5
CVE-2026-34978 [MEDIUM] CVE-2026-34978 cups: OpenPrinting CUPS: Denial of Service via path traversal in RSS notifier
CVE-2026-34978 cups: OpenPrinting CUPS: Denial of Service via path traversal in RSS notifier
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there ar
2026-01-23
Published
2026-07-21
Added to CISA KEV
Exploited in the wild