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-67c5-x5mf-rppq
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GHSA-67c5-x5mf-rppq
mlflow
Source reference: /affected/0/package/name
- Affected versions
- 3.10.0rc0
Source reference:
/affected/0/versions3.9.0Source reference:
/affected/0/versions - Fixed versions
- 3.10.0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "3.9.0"
},
{
"fixed": "3.10.0"
}
]
}
],
"package": {
"name": "mlflow",
"purl": "pkg:pypi/mlflow",
"ecosystem": "PyPI"
},
"versions": [
"3.10.0rc0",
"3.9.0"
],
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-67c5-x5mf-rppq/GHSA-67c5-x5mf-rppq.json"
}
}
]- Related CVEs
- CVE-2026-2611
Source reference:
/aliases
Publisher severity
critical
Source reference: /database_specific/severity
- Event
- #85818 · Revision 1
- Added to Heist Feed
- Publisher date