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Vulnerabilities

Vulnerability · CVE-2026-33896

Forge (also called ) is a native implementation of Transport Layer Security in JavaScript.

Published Mar 27, 2026 · catalog updated Sep 4, 2026 · Red Hat

Check if you run it

No confirmed exploitation is on record for CVE-2026-33896. EPSS is 0.50%. Act only if a listed version of Red Hat is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.50%
Remediation
Advisory link
Affected products
cpe digitalbazaar/forge

A flaw was found in Forge (also known as node-forge), a JavaScript implementation of Transport Layer Security (TLS). The function does not properly enforce certificate validation rules. This oversight allows an intermediate certificate that lacks specific security extensions to enable any leaf certificate to function as a Certificate Authority (CA) and sign other certificates. Consequently, node-forge could accept these unauthorized certificates as valid, potentially leading to spoofing or the issuance of illegitimate certificates.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe digitalbazaar/forgeversion unspecified

How to fix CVE-2026-33896

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-33896. EPSS is 0.50%. Act only if a listed version of Red Hat is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-295: Improper Certificate Validation. EPSS 0.50%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 27, 2026 · NIST NVD

    Detected

    Forge (also called ) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, does not enforce RFC 5280 basicConstraints requirements when an intermediate certificate lacks both the and 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

  2. Sep 4, 2026 · NIST NVD

    Updated

    Forge (also called ) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, does not enforce RFC 5280 basicConstraints requirements when an intermediate certificate lacks both the and 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

Sources

  • CSAF AdvisoriesVendor advisoryRHSA-2026:9742:CVE-2026-33896

    A flaw was found in Forge (also known as node-forge), a JavaScript implementation of Transport Layer Security (TLS). The function does not properly enforce certificate validation rules. This oversight allows an intermediate certificate that lacks specific security extensions to e

    security.access.redhat.com
  • CVE.orgVulnerability recordCVE-2026-33896

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-33896

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-33896

    Forge (also called ) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, does not enforce RFC 5280 basicConstraints requirements when an intermediate certificate lacks both the

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.