high7.5
CVE-2026-28799
PJSIP is a free and open source multimedia communication library written in C.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Pjsip | Pjsip | before 2.17 |