QwikSec

Security Database

CVE

CWE

Training

CVE-2026-4600

Published: Mar 23, 2026

Modified: Mar 23, 2026

PUBLISHED

CVSS v3.1

7.4

HIGH

Description

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.

Vendor	Product	Versions
n/a	jsrsasign	affected `0 - < 11.1.1`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:P

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

References

https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370940

https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7

https://github.com/kjur/jsrsasign/pull/646

https://github.com/kjur/jsrsasign/commit/37b4c06b145c7bfd6bc2a6df5d0a12c56b15ef60

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