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CVE-2026-118780— Forge: verifyCertificateChain() removes trusted CA certificates with the same subject from the CA store

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 1.4.1 版本之前，受影响的实现在处理相关输入或安全决策时，会调用 pki.verifyCertificateChain() 和 pki.createCaStore()，并依赖重复的主题名称（subject names）。node-forge 在执行 pki.verifyCertificateChain() 时，若遇到共享同一主题名称的证书，会修改证书颁发机构（CA）存储。一旦链验证失败，该操作可能永久从存储

CVSS 3.7 · Low Updated Oct 30, 2026

Possible ATT&CK Techniques 2 AI

T1499 · Endpoint Denial of Service T1499.001 · OS Exhaustion Flood

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: verifyCertificateChain() removes trusted CA certificates with the same subject from the CA store

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, the affected implementation used pki.verifyCertificateChain(), pki.createCaStore(), duplicate subject names to process the relevant input or security decision. node-forge modified the CA store while trying certificates that shared a subject name during pki.verifyCertificateChain(). A failed chain verification could permanently remove trusted CA certificates from the store, causing later valid chains to fail and creating a persistent availability impact for applications that reused the store. 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:N/A:L

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-2026-118780

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-118780

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Other References for CVE-2026-118780 (3)

https://github.com/digitalbazaar/forge/releases/tag/v1.4.1 x_refsource_MISC
https://github.com/digitalbazaar/forge/security/advisories/GHSA-4487-j8r4-4g2f x_refsource_CONFIRM
https://github.com/digitalbazaar/forge/commit/f6555609bd30f442fbfacd543155928ceccf98d0 x_refsource_MISC

https://www.cve.org/CVERecord?id=CVE-2026-118780

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-2026-119189	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-2026-118775	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