VULNERABILITY INTELLIGENCE

CVE-2026-4601

CVSS score8.7 HIGH
EPSS probability0.30%
CISA KEVNot currently listed
Published2026-03-23
Last modified2026-09-10
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Description

Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the library emits an invalid signature without retrying, and then solves for x from the resulting signature.

Weakness classification

  • report@snyk.io: CWE-325
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-325

Primary references