Deserialization of Untrusted Data in MLflow - CVE-2026-118623
Published: November 3, 2026
Vulnerability identifier: #VU158814
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-118623
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data in PickleEvaluationArtifact. A remote attacker can trick a victim to open a specially crafted pickle file and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
MLflow
How to mitigate CVE-2026-118623
Install updates from vendor's website.
MLflow - update to 3.13.0