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VULNERABILITIES

CVE-2026-4602 Details

Description

Versions of the package jsrsasign before 11.1.1 are vulnerable to Incorrect Conversion between Numeric Types due to handling negative exponents in ext/jsbn2.js. An attacker can force the computation of incorrect modular inverses and break signature verification by calling modPow with a negative exponent.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: redhat-SADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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-681Incorrect Conversion between Numeric Typesredhat-SADP
CWE-681Incorrect Conversion between Numeric Types[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

14 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-4602
NVD Published Date:
Mar 23, 2026
NVD Last Modified:
Sep 10, 2026
Source:
[email protected]
CVE-2026-4602 Details - Not Deferred