CVE-2026-42225
MEDIUMGnuTLS backend silently skips certificate chain verification when verify_peer is false
Title source: cnaDescription
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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/pjsip/pjproject/security/advisories/GHSA-x2fv-6j6c-pxmx
X_Refsource_Misc x_refsource_misc
https://github.com/pjsip/pjproject/commit/ef684252bb62b0716675b6e99ad7fe4c90e28920
X_Refsource_Misc x_refsource_misc
https://github.com/pjsip/pjproject/releases/tag/2.17
Scores
CVSS v3
5.9
EPSS
0.0016
EPSS Percentile
5.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-295
Status
published
Products (2)
pjsip/pjproject
< 2.17
teluu/pjsip
< 2.17
Published
May 07, 2026
Tracked Since
May 08, 2026