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.

INFO

Published Date :

2026-03-23T05:00:13.312Z

Last Modified :

2026-03-23T14:41:10.087Z

Source :

snyk
AFFECTED PRODUCTS

The following products are affected by CVE-2026-4601 vulnerability.

Vendors Products
Jsrsasign Project
  • Jsrsasign
Kjur
  • Jsrsasign
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-4601.

URL Resource
https://gist.github.com/Kr0emer/93789fe6efe5519db9692d4ad1dad586 cve-icon cve-icon cve-icon
https://github.com/kjur/jsrsasign/commit/0710e392ec35de697ce11e4219c988ba2b5fe0eb cve-icon cve-icon cve-icon
https://github.com/kjur/jsrsasign/pull/645 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-4601 cve-icon
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370941 cve-icon cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-4601 cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact