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CVE-2026-4600 PUBLISHED CVSS 7.400000095367432 HIGH

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.

EPSS 0.01% · 2.0th percentile

Risk Scores

CVSS v3.1
7.400000095367432
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:P
EPSS Score
0.01%
2.0th percentile

Affected Products

VendorProductVersions
n/ajsrsasign0, 0, 0
npmjsrsasign0
jsrsasign_projectjsrsasign0, 0, 0

Timeline

References

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