{"id":"UBUNTU-CVE-2026-33896","details":"Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, `pki.verifyCertificateChain()` does not enforce RFC 5280 basicConstraints requirements when an intermediate certificate lacks both the `basicConstraints` and `keyUsage` extensions. This allows any leaf certificate (without these extensions) to act as a CA and sign other certificates, which node-forge will accept as valid. Version 1.4.0 patches the issue.","modified":"2026-06-30T18:17:36.243713840Z","published":"2026-03-27T21:17:00Z","upstream":["CVE-2026-33896"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-33896"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-33896"},{"type":"REPORT","url":"https://github.com/digitalbazaar/forge/commit/2e492832fb25227e6b647cbe1ac981c123171e90"},{"type":"REPORT","url":"https://github.com/digitalbazaar/forge/security/advisories/GHSA-2328-f5f3-gj25"}],"affected":[{"package":{"name":"node-node-forge","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/node-node-forge?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.8.5~dfsg-2","0.9.1~dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjs-node-forge","binary_version":"0.9.1~dfsg-1"},{"binary_name":"node-node-forge","binary_version":"0.9.1~dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33896.json"}},{"package":{"name":"node-node-forge","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-node-forge?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.10.0~dfsg-3","1.2.1~dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libjs-node-forge","binary_version":"1.2.1~dfsg-2"},{"binary_version":"1.2.1~dfsg-2","binary_name":"node-node-forge"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33896.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}