CVE-2026-2611
In MLflow version 3.9.0, the MLflow Assistant feature introduced improper origin validation in its /ajax-api endpoints.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 9.6 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- EPSS
- 0.38% probability · 32th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-346, CWE-940
- Affected
- lfprojects/mlflow
- Source
- security@huntr.dev
References
- https://github.com/mlflow/mlflow/commit/8f9c8a53af90842944101eb8b7d60706822c81bcPatch
- https://huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5aExploit, Third 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-b6a2-5529604e6e5aExploit, Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2611.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.