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High severity7.5NVD Advisory· Published Mar 6, 2026· Updated Jun 17, 2026

CVE-2026-28799

CVE-2026-28799

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.

Affected products

3
  • Pjsip/Pjsipllm-fuzzy2 versions
    <2.17+ 1 more
    • (no CPE)range: <2.17
    • cpe:2.3:a:pjsip:pjsip:*:*:*:*:*:*:*:*range: <2.17
  • Pjsip/Pjprojectcpe-rescue
    Range: < 2.17

Patches

Vulnerability mechanics

References

2

News mentions

0

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