PyPI/authlib CVE-2025-59420: high 7.5, EPSS 0.26%
Authlib: JWS/JWT accepts unknown crit headers (RFC violation → possible authz bypass)
Action: Upgrade authlib to 1.6.4 or later.
pip install authlib==1.6.4Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.6.4 | - |
Fixed versions
| 1.6.4 |
Sources
- osv: GHSA-9ggr-2464-2j32
- https://github.com/authlib/authlib/security/advisories/GHSA-9ggr-2464-2j32
- https://nvd.nist.gov/vuln/detail/CVE-2025-59420
- https://github.com/authlib/authlib/commit/6b1813e4392eb7c168c276099ff7783b176479df
- https://github.com/authlib/authlib
- https://lists.debian.org/debian-lts-announce/2025/10/msg00032.html
CVE-2025-59420 · published · modified · JSON