CVE-2026-42225CWE-295

GnuTLS backend silently skips certificate chain verification when verify_peer is false

High · published May 7, 2026

CVSS v4.0
8.2
EPSS
0%
Percentile
17.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.2 · HIGH
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
EPSS
0.00268 · 17.9th percentile
Weakness
CWE-295 · Improper Certificate Validation
Published
2026-05-07T18:47Z
EPSS history
Timeline
  • 07 MAY 18:47Z
    GnuTLS backend silently skips certificate chain verification when verify_peer is false
    cvelistv5