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Vulnerability record · CVE-2026-2611 · published 19 May 2026

CVE-2026-2611: Lfprojects mlflow origin validation error vulnerability

Lfprojects · Mlflow

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.

9.6 CVSS 3.1 Critical EPSS 0.41% · top 66.8% CWE-346 · Origin validation errorCWE-940 · CWE-940
9.6CVSS 3.1 base score
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
15 Jul 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/mlflow/mlflow/commit/8f9c8a53af90842944101eb8b7d60706822c81bc Patch
https://huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5a ExploitThird Party Advisory
https://access.redhat.com/security/cve/CVE-2026-2611
https://bugzilla.redhat.com/show_bug.cgi?id=2479797
https://huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5a ExploitThird Party Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2611.json

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-2611), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.