Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability

A code execution vulnerability exists in the Stapler web framework used by Jenkins

Published 7 Oct 2026Updated 7 Oct 2026133 sources
CVSS 0.0 PoC CANDIDATE△ CISA KEV

What happened

A code execution vulnerability exists in the Stapler web framework used by Jenkins

Affected versions

Jenkins Stapler Web Framework: See original advisory Fixed: See vendor advisory.

Why it matters

This source correlation may provide earlier visibility while structured CVE metadata is still being updated.

Detection & mitigation

  • Review the original advisory and validate affected versions.
  • Apply vendor-provided updates or mitigations when available.

Public PoC references