CVE-2026-28799

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/pjsip/pjproject/commit/e06ff6c64741cc1675fd3296615910f532f6b1a1	Patch
https://github.com/pjsip/pjproject/security/advisories/GHSA-8fj4-fv9f-hjpc	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:pjsip:pjsip:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-06 07:16

Updated : 2026-06-17 10:29

NVD link : CVE-2026-28799

Mitre link : CVE-2026-28799

CVE.ORG link : CVE-2026-28799

JSON object : View

Products Affected

pjsip

pjsip

CWE

CWE-416

Use After Free

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