CVE-2026-39864

Description

Kamailio is an open source implementation of a SIP Signaling Server. Prior to 6.0.5 and 5.8.7, an out-of-bounds read in the auth module of Kamailio (formerly OpenSER and SER) allows remote attackers to cause a denial of service (process crash) via a specially crafted SIP packet if a successful user authentication without a database backend is followed by additional user identity checks. This vulnerability is fixed in 6.0.5 and 5.8.7.

PUBLISHED Reserved 2026-04-07 | Published 2026-04-08 | Updated 2026-04-08 | Assigner GitHub_M

Problem types

CWE-125: Out-of-bounds Read

Product status

References

github.com/...mailio/security/advisories/GHSA-6m86-m342-g48m

cve.org (CVE-2026-39864)

nvd.nist.gov (CVE-2026-39864)

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