CVE-2026-18891
published 2026-08-28CVE-2026-18891: IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary flows and access sensitive information due to improper authentication.
PriorityP353high8.2CVSS 3.1
AVNACLPRNUINSUCHILAN
EPSS
0.29%
21.4th percentile
IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary flows and access sensitive information due to improper authentication.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| ibm | langflow_oss | 1.0.0 – 1.11.1 | — |
| langflow | langflow | >= 1.0.0 < 1.11.2 | 1.11.2 |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
IBM Langflow OSS up to 1.11.1 improper authentication
vuldb·2026-08-29·CVSS 8.2
CVE-2026-18891 [HIGH] IBM Langflow OSS up to 1.11.1 improper authentication
A vulnerability identified as critical has been detected in IBM Langflow OSS up to 1.11.1. This affects an unknown part. This manipulation causes improper authentication.
This vulnerability is tracked as CVE-2026-18891. The attack is possible to be carried out remotely. No exploit exists.
GHSA
IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary flows and access sensitive information due to improper authentication.
ghsa_unreviewed·2026-08-29
CVE-2026-18891 [HIGH] CWE-287 IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary flows and access sensitive information due to improper authentication.
IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary flows and access sensitive information due to improper authentication.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-28
Published