CVE-2026-119190 (GCVE-0-2026-119190)
Vulnerability from cvelistv5 – Published: 2026-10-29 19:25 – Updated: 2026-10-29 20:25
VLAI
EPSS
VEX
Title
Forge: X.509 basicConstraints bypass in verifyCertificateChain() via deprecated extension OIDs 2.5.29.10 and 2.5.29.13
Summary
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.
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 20:24 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/digitalbazaar/forge/security/a… | x_refsource_CONFIRM |
| https://github.com/digitalbazaar/forge/commit/58c… | x_refsource_MISC |
| https://github.com/digitalbazaar/forge/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| digitalbazaar | forge |
Affected:
< 1.4.1
|
guessed |
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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