Forge: TLS client crash on an unsupported ServerHello compression method

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-125332
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-10 19:21:10 UTC
Updated2026-11-10 21:46:38 UTC
DescriptionForge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.3, a forge.tls client accepts a ServerHello compression_method that it did not offer. When the client later handles ServerHelloDone, tls.createConnectionState() rejects the unsupported compression algorithm by throwing an Error that propagates from connection.process(). A malicious server or an on-path attacker can alter the unauthenticated ServerHello compression byte before the server Finished message and terminate a Node.js process when the application does not catch the exception. The affected client paths include direct forge.tls use, forge.tls.wrapSocket, and forge.http; forge.tls servers are not affected, and the issue has no confidentiality or integrity impact. This issue is fixed in version 1.4.3.

Risk And Classification

Primary CVSS: v3.1 5.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-20 | CWE-248 | CWE-20 CWE-20: Improper Input Validation | CWE-248 CWE-248: Uncaught Exception

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Digitalbazaar Forge affected < 1.4.3 Not specified

References

ReferenceSourceLinkTags
github.com/digitalbazaar/forge/security/advisories/GHSA-w4xr-hqv8-ch44 [email protected] github.com
github.com/digitalbazaar/forge/commit/1d9816d333c23c523ef2bd8b24282c87db... [email protected] github.com
github.com/digitalbazaar/forge/pull/1169 [email protected] github.com
github.com/digitalbazaar/forge/releases/tag/v1.4.3 [email protected] github.com
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