Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

jwtk/jjwt

              main @ 401ba26
            

Fixes

CVEs

CRITICAL

Peak severity

30.8%

Coverage

Highlights

Auth Bypass: 9 prior fixes. Scrutinize any change in this area.

src/main/java/io/jsonwebtoken/impl/DefaultJwtParser.java: most-fixed (4 issues). Treat as high-risk during review.

12 high-severity fixes in this history; regressions here are high-impact.

Recurring patterns

The bug types that recur here, drawn from past fixes, not open vulnerabilities.

Auth Bypass: Key confusion vulnerability where raw key bytes configured for ECDSA were improperly treated as symmetric key specifications, allowing attackers to forge signatures.

Auth Bypass: Premature validation of claims (expiration and nbf) prior to cryptographic signature verification allowed unauthenticated processing of malformed tokens.

Cryptographic Issues: Vulnerability to JVM ECDSA signature bypass (CVE-2022-21449) due to missing application-level validation of r and s coordinates and weak default signature formatting.