CVE-2026-28799 — PJSIP: Heap use-after-free in PJSIP presence subscription termination handler
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 fr…
Published: 2026-03-06 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7