CVE-2025-68925CWE-347

Jervis has a JWT Algorithm Confusion Vulnerability

Medium · published January 13, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
4.1
In the wild
Unconfirmed
What it is

Jervis is a library for Job DSL plugin scripts and shared Jenkins pipeline libraries. Prior to 2.2, the code doesn't validate that the JWT header specifies "alg":"RS256". This vulnerability is fixed in 2.2.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00153 · 4.1th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2026-01-13T19:30Z
EPSS history
Timeline
  • 13 JAN 19:30Z
    Jervis has a JWT Algorithm Confusion Vulnerability
    cvelistv5