{"id":"CVE-2026-118774","title":"Forge: Certificate signature verified with the issuer's RSA signature scheme","summary":"Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used certificate.verify(child), _verifySignature(), lib/x509.js to process the relevant inpu…","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","cvssSource":"cna","cwe":["CWE-347"],"vendor":"digitalbazaar","product":"forge","affected":["forge < 1.4.1"],"published":"2026-10-29","updated":"2026-10-29","sourceUpdated":"2026-10-29T18:33:46.399Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-118774","references":[{"url":"https://github.com/digitalbazaar/forge/security/advisories/GHSA-9wg5-mj3p-v49q","label":"https://github.com/digitalbazaar/forge/security/advisories/GHSA-9wg5-mj3p-v49q"},{"url":"https://github.com/digitalbazaar/forge/commit/c7f42614d5166a77ddf11ce174b2601b14f6956b","label":"https://github.com/digitalbazaar/forge/commit/c7f42614d5166a77ddf11ce174b2601b14f6956b"},{"url":"https://github.com/digitalbazaar/forge/releases/tag/v1.4.1","label":"https://github.com/digitalbazaar/forge/releases/tag/v1.4.1"}],"tags":["cve.org"],"epss":0.00107,"epssPercentile":0.01111,"ingestedAt":"2026-11-01T23:03:55.429Z","slug":"CVE-2026-118774","body":"## Overview\n\nForge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used certificate.verify(child), _verifySignature(), lib/x509.js to process the relevant input or security decision. node-forge selected RSA padding and RSASSA-PSS parameters from the issuer certificate rather than the child certificate being verified. A child labeled as RSASSA-PSS could therefore be accepted with a PKCS#1 v1.5 signature when the issuer used PKCS#1 v1.5. The signature still had to be produced with the trusted issuer's private key, so this did not permit certificate identity forgery, but it could bypass policies that require a declared signature scheme. This issue is fixed in version 1.4.1.\n\n## Affected\n\n- `forge < 1.4.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}