HIGHCVSS v3.1 7.4Vulnerability
CVE-2026-114616
Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.1, Authlib's OctKey.import_key() and HMAC signing and verification path accept zero-length key material. If an application's secret lookup can return an empty string or empty bytes, a remote attacker can compute the deterministic HS256, HS384, or HS512 signature for arbitrary token claims and have Authlib treat the token as authentic. This issue is fixed in version 1.9.1.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-10-23T02:14:06.697318+00:00
- Cvss severity
- HIGH
- Cvss score
- 7.4
- Retrieved at
- 2026-10-23T02:20:30+00:00
- Score
- 7.4
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-114616
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- First seen by Signal
- 2026-10-23T02:20:30+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Published at
- 2026-10-22T22:18:04.420
- Last modified
- 2026-10-22T22:18:04.420
Related Entities (3)
HAS_WEAKNESS (3)
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