CVE-2026-2611
published 2026-05-19CVE-2026-2611: In MLflow version 3.9.0, the MLflow Assistant feature introduced improper origin validation in its /ajax-api endpoints. This vulnerability allows a remote…
PriorityP358critical9.6CVSS 3.1
AVNACLPRNUIRSCCHIHAH
EPSS
0.38%
32.3th percentile
In MLflow version 3.9.0, the MLflow Assistant feature introduced improper origin validation in its /ajax-api endpoints. This vulnerability allows a remote attacker to exploit cross-origin requests from a malicious webpage to interact with the MLflow Assistant running on a victim's local machine. By bypassing the loopback-only restriction, the attacker can modify the Assistant's configuration to enable full access, which in turn allows the execution of arbitrary commands via the Claude Code sub-agent. This issue is resolved in version 3.10.0.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| lfprojects | mlflow | >= 3.9.0 < 3.10.0 | 3.10.0 |
| lfprojects | mlflow | >= 3.9.0 < 3.10.0 | 3.10.0 |
| mlflow | mlflow_mlflow | >= unspecified < 3.10.0 | 3.10.0 |
CVSS provenance
nvdv3.19.6CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
nvdv3.09.6CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
vendor_redhat9.6CRITICAL
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.
GHSA
MLflow: Improper Origin Validation in MLflow Assistant /ajax-api Endpoints Enables Browser-Mediated Local Command Execution
ghsa·2026-05-19
CVE-2026-2611 [CRITICAL] CWE-346 MLflow: Improper Origin Validation in MLflow Assistant /ajax-api Endpoints Enables Browser-Mediated Local Command Execution
MLflow: Improper Origin Validation in MLflow Assistant /ajax-api Endpoints Enables Browser-Mediated Local Command Execution
In MLflow version 3.9.0, the MLflow Assistant feature introduced improper origin validation in its /ajax-api endpoints. This vulnerability allows a remote attacker to exploit cross-origin requests from a malicious webpage to interact with the MLflow Assistant running on a victim's local machine. By bypassing the loopback-only restriction, the attacker can modify the Assistant's configuration to enable full access, which in turn allows the execution of arbitrary commands via the Claude Code sub-agent. This issue is resolved in version 3.10.0.
GHSA
GHSA-67c5-x5mf-rppq: In MLflow version 3
ghsa_unreviewed·2026-05-19
CVE-2026-2611 [CRITICAL] CWE-346 GHSA-67c5-x5mf-rppq: In MLflow version 3
In MLflow version 3.9.0, the MLflow Assistant feature introduced improper origin validation in its /ajax-api endpoints. This vulnerability allows a remote attacker to exploit cross-origin requests from a malicious webpage to interact with the MLflow Assistant running on a victim's local machine. By bypassing the loopback-only restriction, the attacker can modify the Assistant's configuration to enable full access, which in turn allows the execution of arbitrary commands via the Claude Code sub-agent. This issue is resolved in version 3.10.0.
Red Hat
mlflow: MLflow: Arbitrary Code Execution via Improper Origin Validation
vendor_redhat·2026-05-19·CVSS 9.6
CVE-2026-2611 [CRITICAL] CWE-940 mlflow: MLflow: Arbitrary Code Execution via Improper Origin Validation
mlflow: MLflow: Arbitrary Code Execution via Improper Origin Validation
A flaw was found in MLflow. Improper origin validation in the MLflow Assistant's /ajax-api endpoints allows a remote attacker to exploit cross-origin requests from a malicious webpage. This enables interaction with the MLflow Assistant running on a victim's local machine, bypassing loopback-only restrictions. Consequently, an attacker can modify the Assistant's configuration to gain full access, leading to the execution of arbitrary commands via the Claude Code sub-agent.
Statement: No Red Hat products ship the affected version of mlflow.
Package: rhoai/odh-mlflow-rhel9 (Red Hat OpenShift AI (RHOAI)) - Not affected
Package: rhoai/odh-pipeline-runtime-datascience-cpu-py312-rhel9 (Red Hat OpenShift AI (RHOAI)) - Not
No detection rules found.
No public exploits indexed.
https://github.com/mlflow/mlflow/commit/8f9c8a53af90842944101eb8b7d60706822c81bchttps://huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5ahttps://access.redhat.com/security/cve/CVE-2026-2611https://bugzilla.redhat.com/show_bug.cgi?id=2479797https://huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5ahttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2611.json
2026-05-19
Published