{"id":"CVE-2026-85393","aliases":["CVE-2026-33894","GHSA-86w9-cpqp-85rv","GHSA-ppp5-5v6c-4jwp"],"url":"https://o3.security/vulnerability/CVE-2026-85393","summary":"node-forge through 1.4.0 RSA PKCS#1 v1.5 Signature Forgery via Nested DigestAlgorithm Padding","details":"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.","published":"2026-09-03T18:54:25.878Z","modified":"2026-10-21T03:00:30.546014316Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"node-forge","fixedVersion":null}],"fix":{"url":"https://github.com/digitalbazaar/forge/pull/1152","label":"digitalbazaar/forge#1152"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85393.json"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-ppp5-5v6c-4jwp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85393"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/node-forge-through-1.4.0-rsa-pkcs-1-1.5-signature-forgery-via-nested-digestalgorithm-padding"},{"type":"REPORT","url":"https://github.com/digitalbazaar/forge/issues/1149"},{"type":"PACKAGE","url":"https://github.com/digitalbazaar/forge"},{"type":"ARTICLE","url":"https://github.com/digitalbazaar/forge/blob/v1.4.0/lib/asn1.js"},{"type":"ARTICLE","url":"https://github.com/digitalbazaar/forge/blob/v1.4.0/lib/rsa.js"},{"type":"WEB","url":"https://github.com/digitalbazaar/forge/pull/1152"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T03:00:30.546014316Z"}}