{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4602","assignerOrgId":"bae035ff-b466-4ff4-94d0-fc9efd9e1730","state":"PUBLISHED","assignerShortName":"snyk","dateReserved":"2026-03-22T16:26:15.167Z","datePublished":"2026-03-23T05:00:10.567Z","dateUpdated":"2026-03-23T14:37:39.558Z"},"containers":{"cna":{"metrics":[{"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","exploitCodeMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P"},"cvssV4_0":{"version":"4.0","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"}}],"credits":[{"value":"Kr0emer","lang":"en"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-681","description":"Incorrect Conversion between Numeric Types","lang":"en"}]}],"providerMetadata":{"orgId":"bae035ff-b466-4ff4-94d0-fc9efd9e1730","shortName":"snyk","dateUpdated":"2026-03-23T05:00:10.567Z"},"descriptions":[{"value":"Versions of the package jsrsasign before 11.1.1 are vulnerable to Incorrect Conversion between Numeric Types due to handling negative exponents in ext/jsbn2.js. An attacker can force the computation of incorrect modular inverses and break signature verification by calling modPow with a negative exponent.","lang":"en"}],"references":[{"url":"https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15371175"},{"url":"https://gist.github.com/Kr0emer/7ecd2be7d17419e4677315ef3758faf5"},{"url":"https://github.com/kjur/jsrsasign/pull/650"},{"url":"https://github.com/kjur/jsrsasign/commit/5ea1c32bb2aa894b4bd29849839afe4f98728195"}],"affected":[{"product":"jsrsasign","versions":[{"version":"0","lessThan":"11.1.1","status":"affected","versionType":"semver"}],"vendor":"n/a"}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-23T14:37:35.060950Z","id":"CVE-2026-4602","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-23T14:37:39.558Z"}}]}}