{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4600","assignerOrgId":"bae035ff-b466-4ff4-94d0-fc9efd9e1730","state":"PUBLISHED","assignerShortName":"snyk","dateReserved":"2026-03-22T16:26:03.357Z","datePublished":"2026-03-23T05:00:08.475Z","dateUpdated":"2026-03-23T15:53:02.042Z"},"containers":{"cna":{"metrics":[{"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","exploitCodeMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:P"},"cvssV4_0":{"version":"4.0","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","vectorString":"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"}}],"credits":[{"value":"Kr0emer","lang":"en"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-347","description":"Improper Verification of Cryptographic Signature","lang":"en"}]}],"providerMetadata":{"orgId":"bae035ff-b466-4ff4-94d0-fc9efd9e1730","shortName":"snyk","dateUpdated":"2026-03-23T05:00:08.475Z"},"descriptions":[{"value":"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.","lang":"en"}],"references":[{"url":"https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370940"},{"url":"https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7"},{"url":"https://github.com/kjur/jsrsasign/pull/646"},{"url":"https://github.com/kjur/jsrsasign/commit/37b4c06b145c7bfd6bc2a6df5d0a12c56b15ef60"}],"affected":[{"product":"jsrsasign","versions":[{"version":"0","lessThan":"11.1.1","status":"affected","versionType":"semver"}],"vendor":"n/a"}]},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-347","lang":"en","description":"CWE-347 Improper Verification of Cryptographic Signature"}]}],"references":[{"url":"https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-23T14:32:39.569693Z","id":"CVE-2026-4600","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-23T15:53:02.042Z"}}]}}