CVE-2026-92091
CVE-2026-92091 · Jwcrypto: jwcrypto: denial of service via o(n^2) duplicate check on unbounded jwk key_ops array
This page contains facts from public vulnerability sources. Check the original advisory before updating.
A flaw was found in jwcrypto. The JWK.import_key() function validates the key_ops JWK member for duplicate values using an algorithm with O(n^2) time complexity, and the length of key_ops is not bounded. A remote, unauthenticated attacker can supply a JWK with a large key_ops array to an application that passes attacker-controlled key material to a public key-import API (reachable via ECDH-ES key agreement, OIDC dynamic client registration, DPoP, or ACME account key registration, among others) to consume excessive CPU time, resulting in a denial of service.
CVSS 5.9 · Medium · EPSS 0.6%
- Published
- Updated
Stack: system
Affected products and versions
red hat ansible automation platform 2
No fix published
red hat enterprise linux 10
No fix published
red hat enterprise linux 7
No fix published
red hat enterprise linux 8
No fix published
red hat enterprise linux 9
No fix published
red hat openshift ai (rhoai)
No fix published
red hat openstack platform 16.2
No fix published
red hat openstack platform 17.1
No fix published
python-jwcrypto Debian:12
- Versions
- 1.1.0-1
- 1.1.0-1+deb12u1
- 1.5.4-1
- 1.5.6-1
- 1.5.6-1.1
- 1.5.6-1.1~deb13u1
- 1.5.6-1.2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-jwcrypto Debian:13
- Versions
- 1.5.6-1
- 1.5.6-1.1
- 1.5.6-1.1~deb13u1
- 1.5.6-1.2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-jwcrypto Debian:14
- Versions
- 1.5.6-1
- 1.5.6-1.1
- 1.5.6-1.1~deb13u1
- 1.5.6-1.2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-jwcrypto Ubuntu:16.04:LTS
- Versions
- 0.2.1-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-jwcrypto Ubuntu:18.04:LTS
- Versions
- 0.3.2-1
- 0.4.2-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-jwcrypto Ubuntu:20.04:LTS
- Versions
- 0.6.0-1
- 0.6.0-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-jwcrypto Ubuntu:22.04:LTS
- Versions
- 0.8.0-1
- 1.0.0-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-jwcrypto Ubuntu:24.04:LTS
- Versions
- 1.1.0-1
- 1.5.4-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-jwcrypto Ubuntu:26.10
- Versions
- 1.5.6-1
- 1.5.6-1.1
- 1.5.6-1.2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-jwcrypto Ubuntu:26.04:LTS
- Versions
- 1.5.6-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published