CVE-2026-42225 HIGH

CVE-2026-42225: GnuTLS backend silently skips certificate chain verification when verify_peer is false

Vendor Pjsip
Product pjproject
Weakness CWE-295
Published May 7, 2026
Last update May 8, 2026
View on NVD All CVEs

CVSS base score

8.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 7, 2026 CVE published
May 8, 2026 Record updated