9.1

CVE-2026-4600

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Kjur ≫ Jsrsasign SwPlatformnode.js Version < 11.1.1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.13
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 9.1 3.9 5.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Snyk 8.1 0 0
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Snyk 7.4 2.2 5.2
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 8.2 3.9 4.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
CWE-347 Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

https://github.com/kjur/jsrsasign/pull/646
Issue Tracking
https://github.com/kjur/jsrsasign/commit/37b4c06b145c7bfd6bc2a6df5d0a12c56b15ef60
Patch
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-2026:19375
https://access.redhat.com/errata/RHSA-2026:6568
https://access.redhat.com/errata/RHSA-2026:6720
https://access.redhat.com/errata/RHSA-2026:19409
https://access.redhat.com/errata/RHSA-2026:19410
https://access.redhat.com/errata/RHSA-2026:6926
https://access.redhat.com/errata/RHSA-2026:6912
https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7
Third Party Advisory
Exploit
Mitigation
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812268
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370940
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-4600