VDB
CVE-2026-27962
CVE-2026-27962
PUBLISHED
CVSS 9.100000381469727 CRITICAL
Authlib JWS JWK Header Injection: Signature Verification Bypass
EPSS 0.08% · 24.0th percentile
Risk Scores
CVSS 3.1
9.100000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score
0.08%
24.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| PyPI | authlib | 0, 0, 0 |
| authlib | authlib | < 1.6.9, 0, < 1.6.9 |
Exploit Intelligence
- CIRCL seen: CVE-2026-27962 (circl-sighting)
- https://github.com/authlib/authlib/commit/a5d4b2d4c9e46bfa11c82f85fdc2bcc0b50ae681 (circl)
- https://github.com/authlib/authlib/releases/tag/v1.6.9 (circl)
- https://github.com/authlib/authlib/security/advisories/GHSA-wvwj-cvrp-7pv5 (nist-nvd)
- docker-compose.dev.yml (github-poc)
- docker-compose.dev.yml (github-poc)
- docker-compose.dev.yml (github-poc)
- docker-compose.dev.yml (github-poc)
- docker-compose.dev.yml (github-poc)
- docker-compose.dev.yml (github-poc)
…and 2 more exploits
Timeline
- Mar 16, 2026 CVE Published
- Mar 17, 2026 EPSS Score
- Mar 17, 2026 Coalition ESS Score
- Mar 17, 2026 Security Advisory
- Mar 18, 2026 EPSS Score
- Mar 19, 2026 EPSS Score
- Mar 20, 2026 EPSS Score
- Mar 21, 2026 EPSS Score
- Mar 22, 2026 EPSS Score
- Mar 22, 2026 PoC Published
- Mar 23, 2026 EPSS Score
- Mar 24, 2026 EPSS Score
References
- https://github.com/authlib/authlib/security/advisories/GHSA-wvwj-cvrp-7pv5 url
- https://github.com/authlib/authlib/commit/a5d4b2d4c9e46bfa11c82f85fdc2bcc0b50ae681 url
- https://github.com/authlib/authlib/releases/tag/v1.6.9 url
- https://nvd.nist.gov/vuln/detail/CVE-2026-27962 advisory
- https://github.com/authlib/authlib package