Digitalbazaar Forge up to 1.4.2 Handshake tls.handleHandshake null pointer dereference

Summaryinfo

A vulnerability was found in Digitalbazaar Forge up to 1.4.2. It has been rated as problematic. Affected by this vulnerability is the function tls.handleHandshake of the component Handshake. This manipulation causes null pointer dereference. This vulnerability appears as CVE-2026-125334. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Digitalbazaar Forge up to 1.4.2. It has been declared as problematic. Affected by this vulnerability is the function tls.handleHandshake of the component Handshake. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. The product dereferences a pointer that it expects to be valid but is NULL. As an impact it is known to affect availability. The summary by CVE is:

Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.3, a forge.tls client can pass a handshake record to tls.handleHandshake() while the connection has no session, including after a close_notify alert, after the application calls close(), or before handshake() is called. The handler dereferences c.session.md5 before dispatching the message, causing a TypeError to propagate from connection.process(). A malicious server or on-path attacker can deliver the record, including after a reset when the connection uses no encryption, and terminate a Node.js process if the application does not catch the exception. forge.tls servers are not affected, and there is no confidentiality or integrity impact. This issue is fixed in version 1.4.3.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-125334 since 11/09/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.4.3 eliminates this vulnerability.

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Productinfo

Vendor

• Digitalbazaar

Name

• Forge

Version

• 1.4.0
• 1.4.1
• 1.4.2

Website

• Product: https://github.com/digitalbazaar/forge/

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