Use After Free Affecting pjproject package, versions *


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.29% (20th percentile)

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  • Snyk IDSNYK-UBUNTU1804-PJPROJECT-15440837
  • published21 Mar 2026
  • disclosed6 Mar 2026

Introduced: 6 Mar 2026

CVE-2026-28799  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:18.04 pjproject.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pjproject package and not the pjproject package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap use-after-free vulnerability exists in PJSIP's event subscription framework (evsub.c) that is triggered during presence unsubscription (SUBSCRIBE with Expires=0). This issue has been patched in version 2.17.

CVSS Base Scores

version 3.1