CVE-2026-4600
CVE-2026-4600
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 9.1 · Critical · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
jsrsasign
- Versions
- ≥ 0, < 11.1.1: Affected (semver)
Update to 11.1.1
org.webjars.npm:jsrsasign
- Versions
- ≥ 0: Affected (semver)
No fix published
jsrsasign npm
- Affected ranges
- SEMVER: < 11.1.1
Update to 11.1.1
Original sources
- https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370940
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812268
- https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7
- https://github.com/kjur/jsrsasign/pull/646
- https://github.com/kjur/jsrsasign/commit/37b4c06b145c7bfd6bc2a6df5d0a12c56b15ef60
- https://access.redhat.com/security/cve/CVE-2026-4600
- https://bugzilla.redhat.com/show_bug.cgi?id=2450208
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4600.json
- https://access.redhat.com/errata/RHSA-2026:19409
- https://access.redhat.com/errata/RHSA-2026:19410
- https://access.redhat.com/errata/RHSA-2026:6912
- https://access.redhat.com/errata/RHSA-2026:6720
- https://access.redhat.com/errata/RHSA-2026:6568
- https://access.redhat.com/errata/RHSA-2026:19375
- https://access.redhat.com/errata/RHSA-2026:6926
- https://nvd.nist.gov/vuln/detail/CVE-2026-4600