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CVE-2026-125334— Forge: TLS client crash on a handshake record received without a session

Quick assessment

Affected
digitalbazaar forge
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Forge（也称为 node-forge）是 JavaScript 中传输层安全（TLS）的原生实现。在 1.4.3 版本之前，forge.tls 客户端可以在连接未建立会话的情况下，将握手记录传递给 tls.handleHandshake()。这种情况可能发生在以下场景：收到 close_notify 警报之后、应用程序调用 close() 之后，或在调用 handshake() 之前。处理程序在分发消息前会解引用 c.session.md5，从而导致 TypeError 从 connection.process

CVSS 5.9 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
digitalbazaar forge < 1.4.3 affected
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I. Basic Information for CVE-2026-125334

Vulnerability Information
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Vulnerability Title
Forge: TLS client crash on a handshake record received without a session
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
digitalbazaar forge < 1.4.3 -

II. Public POCs for CVE-2026-125334

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III. Intelligence Information for CVE-2026-125334

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Other References for CVE-2026-125334 (4)

Same Patch Batch · digitalbazaar · 2026-11-10 · 5 CVEs total

CVE-2026-125336 7.4 HIGH Forge: X.509 nameConstraints not enforced by verifyCertificateChain()
CVE-2026-125332 5.9 MEDIUM Forge: TLS client crash on an unsupported ServerHello compression method
CVE-2026-125333 5.9 MEDIUM Forge: ReDoS in forge.http response header and cookie trimming
CVE-2026-125335 3.7 LOW Forge: Ed25519 signature verification accepts small-order public keys

IV. Related Vulnerabilities

Same product: forge
Same vendor: digitalbazaar
Same weakness: CWE-476