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CVE-2026-119189— Forge: X.509 pathLenConstraint not enforced by verifyCertificateChain() for CA certificates without keyUsage

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）是一个用 JavaScript 原生实现的传输层安全（TLS）库。在 1.4.1 版本之前，node-forge 仅当 X.509 证书颁发机构（CA）证书同时包含 keyUsage 扩展时，才会强制执行其 basicConstraints 中的 pathLenConstraint 约束。利用此漏洞需要满足以下条件：一个设置了路径长度限制但未包含 keyUsage 扩展的 CA 证书，该证书可链接到应用程序信任的根证书；且攻击者持有该 CA 的私钥，或从其获取了下属 CA

CVSS 5.9 · Medium Updated Oct 30, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

Vendor	Product	Version Range	Status
digitalbazaar	forge	`< 1.4.1`	affected

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Vulnerability Information

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Vulnerability Title

Forge: X.509 pathLenConstraint not enforced by verifyCertificateChain() for CA certificates without keyUsage

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 1.4.1, node-forge enforced an X.509 CA certificate's basicConstraints.pathLenConstraint only when that certificate also carried a keyUsage extension. Exploitation requires a path-length-constrained CA without keyUsage that chains to a root trusted by the application, and an attacker who holds that CA's private key or obtains a subordinate CA certificate from it. The attacker could then construct a chain exceeding the declared path length that still passed pki.verifyCertificateChain(). Public web PKI CA certificates normally include keyUsage; private PKIs with CA certificates created without it are more likely to be affected. This issue is fixed in version 1.4.1.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

证书验证不恰当

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
digitalbazaar	forge	< 1.4.1	-

II. Public POCs for CVE-2026-119189

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-119189

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Other References for CVE-2026-119189 (3)

Release v1.4.1 · digitalbazaar/forge · GitHub x_refsource_MISC
https://github.com/digitalbazaar/forge/security/advisories/GHSA-h46v-rmh6-fq4f x_refsource_CONFIRM
https://github.com/digitalbazaar/forge/commit/696db92348623e88cc63c35f0a89ede481d55ad0 x_refsource_MISC

https://www.cve.org/CVERecord?id=CVE-2026-119189

Same Patch Batch · digitalbazaar · 2026-10-29 · 15 CVEs total

CVE-2026-118779	7.5 HIGH	Forge: Regular expression denial of service in PEM decoding (pem.decode)
CVE-2026-118782	7.5 HIGH	Forge: PKCS#12 MAC forgery and constant-key PBE via zero iteration count
CVE-2026-119188	7.5 HIGH	Forge: Denial of service in TLS record processing via a record interleaved with a fragment
CVE-2026-119191	7.5 HIGH	Forge: ASN.1 resource exhaustion via BIT STRING decoding in asn1.fromDer
CVE-2026-119187	7.5 HIGH	Forge: Denial of service in TLS record processing via call stack exhaustion
CVE-2026-119190	7.4 HIGH	Forge: X.509 basicConstraints bypass in verifyCertificateChain() via deprecated extension
CVE-2026-118778	5.9 MEDIUM	Forge: TLS client crash when the server sends no certificate
CVE-2026-119186	5.9 MEDIUM	Forge: AES-GCM authentication bypass via unvalidated tagLength option
CVE-2026-118777	4.8 MEDIUM	Forge: Prototype Pollution in forge.http cookie handling via a malicious Set-Cookie
CVE-2026-118774	3.7 LOW	Forge: Certificate signature verified with the issuer's RSA signature scheme
CVE-2026-118780	3.7 LOW	Forge: verifyCertificateChain() removes trusted CA certificates with the same subject from
CVE-2026-118775	3.7 LOW	Forge: ASN.1 OID first arc truncation in asn1.oidToDer
CVE-2026-118776	3.7 LOW	Forge: Incomplete PKCS#7 padding validation in AES/DES CBC and ECB decryption
CVE-2026-118781	2.9 LOW	Forge: Denial of Service via infinite loop in BigInteger.modInverse() with negative input

IV. Related Vulnerabilities

Same product: forge

Same vendor: digitalbazaar

Same weakness: CWE-295