CVE-2026-119186 (GCVE-0-2026-119186)
Vulnerability from cvelistv5 – Published: 2026-10-29 19:17 – Updated: 2026-10-29 20:24
VLAI
EPSS
VEX
Title
Forge: AES-GCM authentication bypass via unvalidated tagLength option
Summary
Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, node-forge did not validate the AES-GCM tagLength option passed to start() during decryption through forge.cipher.createDecipher(). When an application derived tagLength from received data or used an unset or zero-like configuration value, a value that converted to zero together with an empty or missing authentication tag caused the calculated and supplied tags to compare as empty, so decipher.finish() accepted unauthenticated ciphertext. Applications that omit tagLength to use the 128-bit default or pass a fixed valid tag length are unaffected. This issue is fixed in version 1.4.1.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 20:23 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/digitalbazaar/forge/security/a… | x_refsource_CONFIRM |
| https://github.com/digitalbazaar/forge/commit/236… | 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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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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