CVE-2026-42225

GnuTLS backend silently skips certificate chain verification when verify_peer is false

MEDIUM
5.9
CVSS Score
Published: May 7, 2026 at 06:47 PM UTC
Updated: October 26, 2026 at 08:10 PM UTC
2 products affected across 2 vendorsPjsipPjsip

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Severity
MEDIUM5.9
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.17
v < 2.17
Affected range stops below 2.17, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

x_refsource_CONFIRMPatchVendor Advisory
Source: cverecord
https://github.com/pjsip/pjproject/security/advisories/GHSA-x2fv-6j6c-pxmx
x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/pjsip/pjproject/releases/tag/2.17

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-295

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