High severity7.4NVD Advisory· Published Mar 23, 2026· Updated Apr 29, 2026
CVE-2026-4600
CVE-2026-4600
Description
Versions of the package jsrsasign before 11.1.1 are vulnerable to Improper Verification of Cryptographic Signature via the DSA domain-parameter validation in KJUR.crypto.DSA.setPublic (and the related DSA/X509 verification flow in src/dsa-2.0.js). An attacker can forge DSA signatures or X.509 certificates that X509.verifySignature() accepts by supplying malicious domain parameters such as g=1, y=1, and a fixed r=1, which make the verification equation true for any hash.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
jsrsasignnpm | < 11.1.1 | 11.1.1 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/kjur/jsrsasign/commit/37b4c06b145c7bfd6bc2a6df5d0a12c56b15ef60nvdPatchWEB
- gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7nvdExploitMitigationThird Party AdvisoryWEB
- github.com/advisories/GHSA-wvqx-v3f6-w8rhghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-4600ghsaADVISORY
- security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370940nvdThird Party AdvisoryWEB
- github.com/kjur/jsrsasign/pull/646nvdIssue TrackingWEB
News mentions
0No linked articles in our index yet.