vetkit.js.jwt.none-algorithm
JWT verification accepts the none algorithm, which disables signature checking.
Last updated:
Suite: Security
javascript, typescript
JWT verification accepts the none algorithm, which disables signature checking.
Category: SECURITY · Engine rule severity: ERROR
How to fix it
Pin algorithms to the exact signing algorithm(s) you use (e.g. ["HS256"] or ["RS256"]).
Rule pattern example
The engine’s matching pattern, not a confirmed exploit. Metavariables and ellipses describe matching syntax.
$JWT.verify($TOKEN, $KEY, {..., algorithms: [..., "none", ...], ...}, ...)References
Source: packages/engine/rules/sast/javascript.yml.
Generated from shipped rule definitions at build time. Matching is a review signal, not proof of exploitability. “generic” denotes text matching, not complete language or framework coverage. Runtime configuration and available tools affect whether a rule runs.