{"id":"GHSA-86w9-cpqp-85rv","revision":"9fe4900f48344f55b1566c431ec47dcd","records":[{"revision":"9fe4900f48344f55b1566c431ec47dcd","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-86w9-cpqp-85rv","aliases":["CVE-2026-33894","CVE-2026-85393","GHSA-ppp5-5v6c-4jwp"],"title":"node-forge RSA PKCS#1 v1.5 signature verification accepts extra nested DigestAlgorithm elements","description":"node-forge through 1.4.0 fails to validate element count in nested DigestAlgorithm sequences during RSA PKCS#1 v1.5 signature verification. Attackers can embed garbage bytes inside the DigestAlgorithm sequence to forge valid signatures for arbitrary messages using low-exponent RSA keys. This is an incomplete fix for CVE-2026-33894.","state":0,"publishedAt":"2026-09-03T21:31:15+00:00","modifiedAt":"2026-10-01T21:40:55.0162514+00:00","affected":[{"ecosystem":"npm","name":"node-forge","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"last_affected","version":"1.4.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":null,"severity":null},{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2026-85393","https://github.com/digitalbazaar/forge/issues/1149","https://github.com/digitalbazaar/forge/pull/1152","https://github.com/advisories/GHSA-ppp5-5v6c-4jwp","https://github.com/digitalbazaar/forge","https://github.com/digitalbazaar/forge/blob/v1.4.0/lib/asn1.js","https://github.com/digitalbazaar/forge/blob/v1.4.0/lib/rsa.js","https://www.vulncheck.com/advisories/node-forge-through-1.4.0-rsa-pkcs-1-1.5-signature-forgery-via-nested-digestalgorithm-padding"],"sourceUrl":"https://github.com/advisories/GHSA-86w9-cpqp-85rv","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-86w9-cpqp-85rv","identifiers":["GHSA-86w9-cpqp-85rv","CVE-2026-33894","CVE-2026-85393","GHSA-ppp5-5v6c-4jwp"]},"retained":false,"historicalAffected":[]}],"coverage":[]}