CVE-2026-4600

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-4600
Versions of the package jsrsasign before 11.1.1 are vulnerable to Improper Verification of Cryptographic Signature via the DSA domain-parameter validation in KJUR.crypto.DSA.setPublic (and the related DSA/X509 verification flow in src/dsa-2.0.js). An attacker can forge DSA signatures or X.509 certificates that X509.verifySignature() accepts by supplying malicious domain parameters such as g=1, y=1, and a fixed r=1, which make the verification equation true for any hash.

7.4 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7 Exploit Mitigation Third Party Advisory
https://github.com/kjur/jsrsasign/commit/37b4c06b145c7bfd6bc2a6df5d0a12c56b15ef60 Patch
https://github.com/kjur/jsrsasign/pull/646 Issue Tracking
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370940 Third Party Advisory
https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7 Exploit Mitigation Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:jsrsasign_project:jsrsasign:*:*:*:*:*:node.js:*:*
History

23 Mar 2026, 16:41

Type Values Removed Values Added
First Time Jsrsasign Project
Jsrsasign Project jsrsasign
References () https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7 - () https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7 - Exploit, Mitigation, Third Party Advisory
References () https://github.com/kjur/jsrsasign/commit/37b4c06b145c7bfd6bc2a6df5d0a12c56b15ef60 - () https://github.com/kjur/jsrsasign/commit/37b4c06b145c7bfd6bc2a6df5d0a12c56b15ef60 - Patch
References () https://github.com/kjur/jsrsasign/pull/646 - () https://github.com/kjur/jsrsasign/pull/646 - Issue Tracking
References () https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370940 - () https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370940 - Third Party Advisory
CPE cpe:2.3:a:jsrsasign_project:jsrsasign:*:*:*:*:*:node.js:*:*

23 Mar 2026, 16:16

Type Values Removed Values Added
References () https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7 - () https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7 -

23 Mar 2026, 06:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-23 06:16

Updated : 2026-03-23 16:41

NVD link : CVE-2026-4600

Mitre link : CVE-2026-4600

CVE.ORG link : CVE-2026-4600

JSON object : View

Products Affected

jsrsasign_project

  • jsrsasign
CWE
CWE-347

Improper Verification of Cryptographic Signature