CVE-2026-33896
CVE-2026-33896 · Forge has a basicConstraints bypass in its certificate chain verification (RFC 5280 violation)
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 7.4 · High · EPSS 0.4% · Fix available
- Published
- Updated
Affected products and versions
forge
- Versions
- < 1.4.0: Affected
No fix published
node-forge npm
- Affected ranges
- SEMVER: < 1.4.0
Update to 1.4.0
node-node-forge Ubuntu:20.04:LTS
- Versions
- 0.8.5~dfsg-2
- 0.9.1~dfsg-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
node-node-forge Ubuntu:22.04:LTS
- Versions
- 0.10.0~dfsg-3
- 1.2.1~dfsg-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://github.com/digitalbazaar/forge/security/advisories/GHSA-2328-f5f3-gj25
- https://github.com/digitalbazaar/forge/commit/2e492832fb25227e6b647cbe1ac981c123171e90
- https://access.redhat.com/security/cve/CVE-2026-33896
- https://bugzilla.redhat.com/show_bug.cgi?id=2452458
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33896.json
- https://access.redhat.com/errata/RHSA-2026:24761
- https://access.redhat.com/errata/RHSA-2026:34342
- https://access.redhat.com/errata/RHSA-2026:9742
- https://access.redhat.com/errata/RHSA-2026:13826
- https://nvd.nist.gov/vuln/detail/CVE-2026-33896