CVE-2026-4600
CVE-2026-4600
Vexday Risk Score
28Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 9.1EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
23 Mar 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
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https://access.redhat.com/errata/RHSA-2026:19375https://access.redhat.com/errata/RHSA-2026:19409https://access.redhat.com/errata/RHSA-2026:19410https://access.redhat.com/errata/RHSA-2026:6568https://access.redhat.com/errata/RHSA-2026:6720https://access.redhat.com/errata/RHSA-2026:6912https://access.redhat.com/errata/RHSA-2026:6926https://access.redhat.com/security/cve/CVE-2026-4600https://bugzilla.redhat.com/show_bug.cgi?id=2450208https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7https://github.com/kjur/jsrsasign/commit/37b4c06b145c7bfd6bc2a6df5d0a12c56b15ef60https://github.com/kjur/jsrsasign/pull/646