CVE-2026-33896

Summary

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.

Affected Software

Weaknesses

• CWE-295: CWE-295: Improper Certificate Validation

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: total

Additional References

• https://github.com/digitalbazaar/forge/security/advisories/GHSA-2328-f5f3-gj25

node-forge: Forge (node-forge): Certificate validation bypass allows unauthorized certificate issuance

Additional References

• 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

References

• https://github.com/digitalbazaar/forge/security/advisories/GHSA-2328-f5f3-gj25
• https://github.com/digitalbazaar/forge/commit/2e492832fb25227e6b647cbe1ac981c123171e90

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