CVE-2026-33896
Forge has a basicConstraints bypass in its certificate chain verification (RFC 5280 violation)
- State
- Published
- Severity
- 7.4 High
- Published
- Mar 27, 2026
- Updated
- Sep 4, 2026
- Reserved
- Mar 24, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.4 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N | GitHub_M |
| 3.1 | 7.4 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N | redhat-SADP |
Weaknesses
- CWE-295 Improper Certificate Validation
Affected Products
| Product | Versions |
|---|---|
forgedigitalbazaar |
|
References
- 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-2026-33896vdb-entry
- RHBZ#2452458issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33896.json
- https://access.redhat.com/errata/RHSA-2026:24761vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:34342vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:9742vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:13826vendor-advisory
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