CVE-2026-42225

GnuTLS backend silently skips certificate chain verification when verify_peer is false

Published: May 7, 2026Updated: May 12, 2026 Sources: CVE List NVDCWE-295

5.9MEDIUM

Description

PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, on GnuTLS builds, the SIP TLS transport (sip_transport_tls) can accept connections with invalid or untrusted certificates even when the application explicitly enables certificate verification via verify_server = PJ_TRUE or verify_client = PJ_TRUE. This issue has been patched in version 2.17.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:HIntegrity

High

A:NAvailability

None

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Weaknesses

CWE-295

Affected Products

teluu

commercialaka pjsip

pjsipMixed

Communications / voip-telephony

pjsip

oss-projectaka pjproject, pjmedia-video

pjprojectMixed

Communications / voip-telephony

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Collection

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References

https://github.com/pjsip/pjproject/commit/ef684252bb62b0716675b6e99ad7fe4c90e28920

github.com

https://github.com/pjsip/pjproject/releases/tag/2.17

github.com

https://github.com/pjsip/pjproject/security/advisories/GHSA-x2fv-6j6c-pxmx

github.com

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