authlib joserfc
7 published vulnerabilities name this product.
As the CNAs write it in their CVE records (vendor and product); the versions are theirs.
| CVE | Vulnerable versions | Title | Severity | Published | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| CVE-2026-102946 | < 1.7.4 | joserfc: JWS signature verification bypass via empty signatures array in jws.deserialize_json | CRITICAL 9.1 | 0.1 % | ||
| CVE-2026-75509 | < 1.7.3 | joserfc claim-validation bypass via array-typed single-string claims (iss/sub/jti) | MEDIUM 6.5 | 0.1 % | ||
| CVE-2026-62995 | < 1.7.2 | joserfc accepts JWT with padding, leading to JWT malleability | LOW 2.3 | 0.1 % | ||
| CVE-2026-49852 | < 1.6.8 | joserfc: HS256/HS384/HS512 verify accepts empty/nil HMAC key (cross-language sibling of CVE-2026-45363) | HIGH 8.7 | 0.2 % | ||
| CVE-2026-48990 | < 1.6.7 | joserfc: b64=false RFC7797 JWS payloads bypass JWSRegistry payload-size limits during deserialization | MEDIUM 5.3 | 0.2 % | ||
| CVE-2026-27932 | <= 1.6.2 | joserfc PBES2 p2c Unbounded Iteration Count enables Denial of Service (DoS) | HIGH 7.5 | 0.4 % | ||
| CVE-2025-65015 | >= 1.3.3, < 1.3.5 ; >= 1.4.0, < 1.4.2 | joserfc has Possible Uncontrolled Resource Consumption Vulnerability Triggered by Logging Arbitrarily Large JWT Token Payloads | CRITICAL 9.2 | 0.4 % |