CVE-2026-32945

PJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below have a Heap-based Buffer Overflowvulnerability in the DNS parser's name length handler. Thisimpacts applications using PJSIP's built-in DNS resolver, such as those configured with pjsua_config.nameserver or UaConfig.nameserver in PJSUA/PJSUA2. It does not affect users who rely on the OS resolver (e.g., getaddrinfo()) by not configuring a nameserver, or those using an external resolver via pjsip_resolver_set_ext_resolver(). This issue is fixed in version 2.17. For users unable to upgrade, a workaround is to disable DNS resolution in the PJSIP config (by setting nameserver_count to zero) or to use an external resolver implementation instead.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/pjsip/pjproject/commit/5311aee398ae9d623829a6bad7b679a193c9e199	Patch
https://github.com/pjsip/pjproject/security/advisories/GHSA-jr2p-p2w4-rr9q	Mitigation Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:pjsip:pjsip:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-20 04:16

Updated : 2026-03-23 20:54

NVD link : CVE-2026-32945

Mitre link : CVE-2026-32945

CVE.ORG link : CVE-2026-32945

JSON object : View

Products Affected

pjsip

pjsip

CWE

CWE-122

Heap-based Buffer Overflow

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