SB20260917228 - Inefficient Algorithmic Complexity in jwcrypto

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260917228

SB20260917228 - Inefficient Algorithmic Complexity in jwcrypto

Published: September 17, 2026

Security Bulletin ID SB20260917228
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Inefficient Algorithmic Complexity (CVE-ID: CVE-2026-92091)

CWE-ID: CWE-407 - Inefficient Algorithmic Complexity

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to inefficient algorithmic complexity in the JWK.import_key key_ops duplicate check when processing attacker-supplied JWK key_ops arrays. A remote attacker can submit a JWK containing many distinct key_ops values to cause a denial of service.

Only applications that pass attacker-controlled JWKs or JWK Sets to a public import API are affected.


Remediation

Install update from vendor's website.

References