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CVE-2026-2611

Improper Origin Validation in mlflow/mlflow

Published: May 19, 2026Updated: May 19, 2026 Sources: CVE List NVDCWE-346
NVD MITRE
9.6CVSSCRITICAL
EPSS Score
0.3%
Top 79.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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 Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-346

Affected Products

mlflow/mlflowmlflow
LibraryLibrary
AI / ML / ml-framework
mlflowoss-projectAI / MLaka mlflow

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5a
huntr.com
https://github.com/mlflow/mlflow/commit/8f9c8a53af90842944101eb8b7d60706822c81bc
github.com

Timeline

Published
May 19, 2026
Last Updated
May 19, 2026

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