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Description

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.

PUBLISHED Reserved 2026-03-03 | Published 2026-03-06 | Updated 2026-03-06 | Assigner GitHub_M




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-416: Use After Free

Product status

< 2.17
affected

References

github.com/...roject/security/advisories/GHSA-8fj4-fv9f-hjpc

github.com/...ommit/e06ff6c64741cc1675fd3296615910f532f6b1a1

cve.org (CVE-2026-28799)

nvd.nist.gov (CVE-2026-28799)

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