{"cve":"CVE-2026-33894","nvd":{"published":"2026-03-27T21:17:25.983","modified":"2026-10-26T21:10:00.170","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-20","CWE-347"],"references":["https://datatracker.ietf.org/doc/html/rfc2313#section-8","https://github.com/digitalbazaar/forge/security/advisories/GHSA-ppp5-5v6c-4jwp","https://mailarchive.ietf.org/arch/msg/openpgp/5rnE9ZRN1AokBVj3VqblGlP63QE","https://www.rfc-editor.org/rfc/rfc8017.html","https://access.redhat.com/errata/RHSA-2026:13826"],"products":["digitalbazaar:forge"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-33894","score":0.00481,"percentile":0.41183,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-86w9-cpqp-85rv","url":"https://osv.dev/vulnerability/GHSA-86w9-cpqp-85rv","summary":"node-forge RSA PKCS#1 v1.5 signature verification accepts extra nested DigestAlgorithm elements","modified":"2026-10-01T21:40:55.016251436Z","packages":[{"ecosystem":"npm","name":"node-forge","purl":"pkg:npm/node-forge","ranges":["<=1.4.0"],"fixed":[]}]},{"id":"GHSA-ppp5-5v6c-4jwp","url":"https://osv.dev/vulnerability/GHSA-ppp5-5v6c-4jwp","summary":"Forge has signature forgery in RSA-PKCS due to ASN.1 extra field  ","modified":"2026-10-01T21:40:55.016251436Z","packages":[{"ecosystem":"npm","name":"node-forge","purl":"pkg:npm/node-forge","ranges":["<1.4.0"],"fixed":["1.4.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}