GHSA-5pq9-5mpr-jj85

Jervis Has a JWT Algorithm Confusion Vulnerability

Source: GitHub Advisory Database (reviewed) Moderate CVE-2025-68925

Packages

Ecosystem	Package	Affected	Fixed in
Maven	net.gleske:jervis	< 2.2	2.2

Details

As written in the advisory (Markdown source, shown as plain text).

### Vulnerability https://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L244-L249 The code doesn't validate that the JWT header specifies `"alg":"RS256"`. ### Impact Depending on the broader system, this could allow JWT forgery. Internally this severity is low since JWT is only intended to interface with GitHub. External users should consider severity moderate. ### Patches Jervis patch will explicitly verify the algorithm in the header matches expectations and further verify the JWT structure. Upgrade to Jervis 2.2. ### Workarounds External users should consider using an alternate JWT library or upgrade. ### References - [RFC 7518: JSON Web Algorithms](https://datatracker.ietf.org/doc/html/rfc7518)

References

External links from the advisory. They lead to third-party sites.