CVE-2026-42225: CWE-295: Improper Certificate Validation in pjsip pjproject
CVE-2026-42225 is a high-severity vulnerability in the pjsip pjproject library prior to version 2. 17. It involves improper certificate validation in the SIP TLS transport when built with GnuTLS. Specifically, the library can accept connections with invalid or untrusted certificates even if certificate verification is explicitly enabled. This issue has been addressed in version 2. 17.
AI Analysis
Technical Summary
The vulnerability CVE-2026-42225 affects pjsip pjproject versions before 2.17 when built with GnuTLS. The SIP TLS transport component (sip_transport_tls) improperly validates certificates, allowing acceptance of invalid or untrusted certificates despite explicit verification settings (verify_server = PJ_TRUE or verify_client = PJ_TRUE). This flaw is classified under CWE-295 (Improper Certificate Validation) and has a CVSS 4.0 score of 8.2, indicating high severity. The issue was patched in version 2.17 of pjproject.
Potential Impact
Exploitation of this vulnerability could allow an attacker to establish TLS connections with the affected pjproject library using invalid or untrusted certificates, potentially enabling man-in-the-middle attacks or interception of SIP communications. The impact is significant given the high CVSS score and the role of certificate validation in securing TLS connections.
Mitigation Recommendations
Users of pjproject should upgrade to version 2.17 or later, where this certificate validation issue has been fixed. Since the vendor advisory confirms the patch in version 2.17, applying this official fix is the recommended remediation. No alternative mitigations or temporary fixes are indicated.
CVE-2026-42225: CWE-295: Improper Certificate Validation in pjsip pjproject
Description
CVE-2026-42225 is a high-severity vulnerability in the pjsip pjproject library prior to version 2. 17. It involves improper certificate validation in the SIP TLS transport when built with GnuTLS. Specifically, the library can accept connections with invalid or untrusted certificates even if certificate verification is explicitly enabled. This issue has been addressed in version 2. 17.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-42225 affects pjsip pjproject versions before 2.17 when built with GnuTLS. The SIP TLS transport component (sip_transport_tls) improperly validates certificates, allowing acceptance of invalid or untrusted certificates despite explicit verification settings (verify_server = PJ_TRUE or verify_client = PJ_TRUE). This flaw is classified under CWE-295 (Improper Certificate Validation) and has a CVSS 4.0 score of 8.2, indicating high severity. The issue was patched in version 2.17 of pjproject.
Potential Impact
Exploitation of this vulnerability could allow an attacker to establish TLS connections with the affected pjproject library using invalid or untrusted certificates, potentially enabling man-in-the-middle attacks or interception of SIP communications. The impact is significant given the high CVSS score and the role of certificate validation in securing TLS connections.
Mitigation Recommendations
Users of pjproject should upgrade to version 2.17 or later, where this certificate validation issue has been fixed. Since the vendor advisory confirms the patch in version 2.17, applying this official fix is the recommended remediation. No alternative mitigations or temporary fixes are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-25T05:37:12.116Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fce65acbff5d861023a2e5
Added to database: 5/7/2026, 7:22:02 PM
Last enriched: 5/7/2026, 7:36:28 PM
Last updated: 5/7/2026, 8:34:16 PM
Views: 6
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