PT-2026-26552 · Pjsip · Pjproject

Published 2026-03-20 · Updated 2026-03-20 · CVE-2026-32945

Mitre

CVSS v4.0

8.4

High

AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N

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.

Fix

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2026-32945

Affected Products

Pjproject

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-32945 · Security Note
• https://github.com/pjsip/pjproject/commit/5311aee398ae9d623829a6bad7b679a193c9e199 · Note
• https://github.com/pjsip/pjproject/security/advisories/GHSA-jr2p-p2w4-rr9q · Note