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VULNERABILITIES

CVE-2026-4601 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CNA: redhat-SADPCVSS-B:8.7 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:19375 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:19409 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:19410 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:6568 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:6720 redhat-SADP

see all 15 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-325Missing Cryptographic Stepredhat-SADP
CWE-325Missing Cryptographic Step[email protected]

Affected Products

ProductVersions
kjur jsrsasign
< 11.1.1

CPE

  • cpe:2.3:a:kjur:jsrsasign:*:*:*:*:*:node.js:*:*

Remediation

  • No remediation found in references.

Change History

15 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-4601
NVD Published Date:
Mar 23, 2026
NVD Last Modified:
Sep 10, 2026
Source:
[email protected]