CVE-2026-28799

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/6/2026

Last Modified3/10/2026

Sourcenvd

Honeypot Sightings0

Affected Products

pjsip:pjsip

Weaknesses (CWE)

CWE-416

References

https://github.com/pjsip/pjproject/commit/e06ff6c64741cc1675fd3296615910f532f6b1a1(security-advisories@github.com)

https://github.com/pjsip/pjproject/security/advisories/GHSA-8fj4-fv9f-hjpc(security-advisories@github.com)

IOC Correlations

No correlations recorded

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