---
id: CVE-2026-118774
title: 'Forge: Certificate signature verified with the issuer''s RSA signature scheme'
summary: >-
  Forge (also called node-forge) is a native implementation of Transport Layer
  Security in JavaScript. Prior to 1.4.1, the affected implementation used
  certificate.verify(child), _verifySignature(), lib/x509.js to process the
  relevant inpu…
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-347
vendor: digitalbazaar
product: forge
affected:
  - forge < 1.4.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-03T16:07:42.750179Z'
published: '2026-10-29'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T16:17:21.117Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-118774'
references:
  - url: >-
      https://github.com/digitalbazaar/forge/security/advisories/GHSA-9wg5-mj3p-v49q
    label: >-
      https://github.com/digitalbazaar/forge/security/advisories/GHSA-9wg5-mj3p-v49q
  - url: >-
      https://github.com/digitalbazaar/forge/commit/c7f42614d5166a77ddf11ce174b2601b14f6956b
    label: >-
      https://github.com/digitalbazaar/forge/commit/c7f42614d5166a77ddf11ce174b2601b14f6956b
  - url: 'https://github.com/digitalbazaar/forge/releases/tag/v1.4.1'
    label: 'https://github.com/digitalbazaar/forge/releases/tag/v1.4.1'
tags:
  - cve.org
epss: 0.00107
epssPercentile: 0.01129
ingestedAt: '2026-11-01T23:03:55.429Z'
---

## Overview

Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used certificate.verify(child), _verifySignature(), lib/x509.js to process the relevant input or security decision. node-forge selected RSA padding and RSASSA-PSS parameters from the issuer certificate rather than the child certificate being verified. A child labeled as RSASSA-PSS could therefore be accepted with a PKCS#1 v1.5 signature when the issuer used PKCS#1 v1.5. The signature still had to be produced with the trusted issuer's private key, so this did not permit certificate identity forgery, but it could bypass policies that require a declared signature scheme. This issue is fixed in version 1.4.1.

## Affected

- `forge < 1.4.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.