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CVE-2026-119190— Forge: X.509 basicConstraints bypass in verifyCertificateChain() via deprecated extension OIDs 2.5.29.10 and 2.5.29.13

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 会将已弃用的扩展对象标识符（OID）2.5.29.10 和 2.5.29.13 解析为 basicConstraints 扩展，且 pki.verifyCertificateChain() 函数会采用第一个具有该名称的扩展。利用此漏洞需要应用程序所信任的证书颁发机构（CA）签发一份包含由攻击者提供的已弃用 OID 扩展的证书；这种情况通常发生在 CA 从证书签名

CVSS 7.4 · High

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 1

VendorProduct Version RangeStatus
digitalbazaar forge < 1.4.1 affected
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I. Basic Information for CVE-2026-119190

Vulnerability Information
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Vulnerability Title
Forge: X.509 basicConstraints bypass in verifyCertificateChain() via deprecated extension OIDs 2.5.29.10 and 2.5.29.13
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 parsed deprecated extension OIDs 2.5.29.10 and 2.5.29.13 as basicConstraints, and pki.verifyCertificateChain() used the first extension with that name. Exploitation requires a CA trusted by the application to issue a certificate carrying an attacker-supplied deprecated-OID extension, commonly because the CA copies extensions from a certificate signing request. By placing a permissive deprecated extension before the genuine 2.5.29.19 basicConstraints extension, the certificate holder could have the certificate accepted as a CA and issue certificates for arbitrary names, enabling server or client impersonation. If the issuing CA adds a keyUsage extension without keyCertSign, node-forge rejects the chain. 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:H/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-2026-119190

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III. Intelligence Information for CVE-2026-119190

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Other References for CVE-2026-119190 (3)

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-2026-118778 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-2026-119189 5.9 MEDIUM Forge: X.509 pathLenConstraint not enforced by verifyCertificateChain() for CA certificate
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