{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33894","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-24T15:41:47.489Z","datePublished":"2026-03-27T20:45:49.583Z","dateUpdated":"2026-03-31T14:05:14.708Z"},"containers":{"cna":{"title":"Forge has signature forgery in RSA-PKCS due to ASN.1 extra field","problemTypes":[{"descriptions":[{"cweId":"CWE-347","lang":"en","description":"CWE-347: Improper Verification of Cryptographic Signature","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"CWE-20: Improper Input Validation","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/digitalbazaar/forge/security/advisories/GHSA-ppp5-5v6c-4jwp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/digitalbazaar/forge/security/advisories/GHSA-ppp5-5v6c-4jwp"},{"name":"https://github.com/digitalbazaar/forge/security/advisories/GHSA-ppp5-5v6c-4jwp","tags":["x_refsource_MISC"],"url":"https://github.com/digitalbazaar/forge/security/advisories/GHSA-ppp5-5v6c-4jwp"},{"name":"https://datatracker.ietf.org/doc/html/rfc2313#section-8","tags":["x_refsource_MISC"],"url":"https://datatracker.ietf.org/doc/html/rfc2313#section-8"},{"name":"https://mailarchive.ietf.org/arch/msg/openpgp/5rnE9ZRN1AokBVj3VqblGlP63QE","tags":["x_refsource_MISC"],"url":"https://mailarchive.ietf.org/arch/msg/openpgp/5rnE9ZRN1AokBVj3VqblGlP63QE"},{"name":"https://www.rfc-editor.org/rfc/rfc8017.html","tags":["x_refsource_MISC"],"url":"https://www.rfc-editor.org/rfc/rfc8017.html"}],"affected":[{"vendor":"digitalbazaar","product":"forge","versions":[{"version":"< 1.4.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-03-27T20:45:49.583Z"},"descriptions":[{"lang":"en","value":"Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, RSASSA PKCS#1 v1.5 signature verification accepts forged signatures for low public exponent keys (e=3). Attackers can forge signatures by stuffing “garbage” bytes within the ASN structure in order to construct a signature that passes verification, enabling Bleichenbacher style forgery. This issue is similar to CVE-2022-24771, but adds bytes in an addition field within the ASN structure, rather than outside of it.  Additionally, forge does not validate that signatures include a minimum of 8 bytes of padding as defined by the specification, providing attackers additional space to construct Bleichenbacher forgeries. Version 1.4.0 patches the issue."}],"source":{"advisory":"GHSA-ppp5-5v6c-4jwp","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-31T14:04:30.304300Z","id":"CVE-2026-33894","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":"2026-03-31T14:05:14.708Z"}}]}}