CVE-2026-119186

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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/digitalbazaar/forge/commit/236845d96c71207259f91638d0138bba8e2fd624
https://github.com/digitalbazaar/forge/releases/tag/v1.4.1
https://github.com/digitalbazaar/forge/security/advisories/GHSA-5cwg-6vw7-rj6p
https://github.com/digitalbazaar/forge/security/advisories/GHSA-5cwg-6vw7-rj6p

Configurations

No configuration.

History

29 Oct 2026, 21:17

Type	Values Removed	Values Added
References	~~() https://github.com/digitalbazaar/forge/security/advisories/GHSA-5cwg-6vw7-rj6p -~~	() https://github.com/digitalbazaar/forge/security/advisories/GHSA-5cwg-6vw7-rj6p -

29 Oct 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-29 20:17

Updated : 2026-10-30 17:18

NVD link : CVE-2026-119186

Mitre link : CVE-2026-119186

CVE.ORG link : CVE-2026-119186

JSON object : View

Products Affected

No product.

CWE

CWE-354

Improper Validation of Integrity Check Value

CWE-1284

Improper Validation of Specified Quantity in Input

{"id": "CVE-2026-119186", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-119186", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-29T20:23:41.622079Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.2}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "digitalbazaar", "product": "forge", "versions": [{"status": "affected", "version": "< 1.4.1"}]}]}], "published": "2026-10-29T20:17:29.500", "references": [{"url": "https://github.com/digitalbazaar/forge/commit/236845d96c71207259f91638d0138bba8e2fd624", "source": "security-advisories@github.com"}, {"url": "https://github.com/digitalbazaar/forge/releases/tag/v1.4.1", "source": "security-advisories@github.com"}, {"url": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-5cwg-6vw7-rj6p", "source": "security-advisories@github.com"}, {"url": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-5cwg-6vw7-rj6p", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-354"}, {"lang": "en", "value": "CWE-1284"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-10-30T17:18:03.880", "sourceIdentifier": "security-advisories@github.com"}