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VULNERABILITIES

CVE-2026-92091 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/latchset/jwcrypto/security/advisories/GHSA-pwgw-f7xr-863h CISA-ADP
https://access.redhat.com/security/cve/CVE-2026-92091 [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2533849 [email protected]
https://github.com/latchset/jwcrypto/security/advisories/GHSA-pwgw-f7xr-863h [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-407Inefficient Algorithmic Complexity[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-92091
NVD Published Date:
Sep 16, 2026
NVD Last Modified:
Sep 16, 2026
Source:
[email protected]
CVE-2026-92091 Details - Not Deferred