CVE Database›Document archive›CVE-2026-33894

CVE-2026-33894

node-forge: Forge: Signature Forgery via Weak RSASSA PKCS#1 v1.5 Verification

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Severity

Important

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · March 28, 2026

Updated · November 5, 2026

Description

A flaw was found in Forge (also called node-forge), a JavaScript implementation of Transport Layer Security. A remote attacker could exploit weaknesses in the RSASSA PKCS#1 v1.5 signature verification process. By crafting malicious signatures that include extra data within the ASN structure and do not meet padding requirements, an attacker can bypass signature validation. This allows for the creation of forged signatures that appear legitimate, potentially compromising the integrity and authenticity of communications.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CWE-347 · Improper Verification of Cryptographic Signature