{"id":"CVE-2026-85393","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-85393","generatedAt":"2026-10-27T23:10:08.132Z","title":"Attackers can embed garbage bytes inside the DigestAlgorithm sequence to forge valid signatures for arbitrary messages using low-exponent RSA keys.","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.","published":"2026-09-03T19:17:31.000Z","lastModified":"2026-09-24T20:43:33.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-347"],"affected":[],"epss":{"score":0.00326,"percentile":0.25488,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/advisories/GHSA-ppp5-5v6c-4jwp","source":"disclosure@vulncheck.com"},{"url":"https://github.com/digitalbazaar/forge","source":"disclosure@vulncheck.com"},{"url":"https://github.com/digitalbazaar/forge/blob/v1.4.0/lib/asn1.js","source":"disclosure@vulncheck.com"},{"url":"https://github.com/digitalbazaar/forge/blob/v1.4.0/lib/rsa.js","source":"disclosure@vulncheck.com"},{"url":"https://github.com/digitalbazaar/forge/issues/1149","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/node-forge-through-1.4.0-rsa-pkcs-1-1.5-signature-forgery-via-nested-digestalgorithm-padding","source":"disclosure@vulncheck.com"},{"url":"https://github.com/advisories/GHSA-ppp5-5v6c-4jwp","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-85393","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}