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Advisory record · GHSA-8qwj-4jxw-m8jw

jsrsasign: Negative Exponent Handling Leads to Signature Verification Bypass

CVSS 8.7 HighEPSS 0.0050 · 42nd percentile

Published by the GitHub Advisory Database at 23 Mar 2026, 06:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
jsrsasignnpm<11.1.111.1.1
Identifiers
GHSA-8qwj-4jxw-m8jw · CVE-2026-4602
Weakness (CWE)
CWE-681
Tags
Published
23 Mar 2026
Updated
21 Jul 2026

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.7 High 4.0 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/E:P CNA (snyk)
  • CISA KEV Not listed.
  • EPSS 0.0050, the 42nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the GitHub Advisory Database, published 23 Mar 2026. New records show when each source confirmed them.

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.