Detections
Analytics

SCA: security update for jsrsasign (GHSA-8qwj-4jxw-m8jw)

high Tenable Cloud Security Plugin ID 439491

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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.
 (CVE-2026-4602)

Solution

Update the jsrsasign library and its related packages to version 11.1.1 or later.

See Also

https://github.com/advisories/GHSA-8qwj-4jxw-m8jw

Plugin Details

Severity: High

ID: 439491

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 3/31/2026

Updated: 7/15/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-4602

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 7.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/23/2026

Vulnerability Publication Date: 3/23/2026

Reference Information

CVE: CVE-2026-4602

cwe: CWE-681