MEDIUM

CVE-2026-92091

2026-09-16 CVSS v3.1

CVSS

5.9

Description

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.

Weakness (CWE)

CWE-407

EPSS Score

0.5%

Probability of exploitation in next 30 days

41.6th percentile

References

https://access.redhat.com/security/cve/CVE-2026-92091 https://bugzilla.redhat.com/show_bug.cgi?id=2533849 https://github.com/latchset/jwcrypto/security/advisories/GHSA-pwgw-f7xr-863h

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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