CVE-2026-49847

Name
CVE-2026-49847
Description
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, a single unauthenticated WebSocket frame containing a deeply nested JSON document crashes the FreeSWITCH process via stack overflow, terminating all calls and sessions on the host. The recursion drives the worker thread's stack pointer into the stack guard page, raising SIGSEGV from the kernel before any usable write primitive develops. This issue has been patched in version 1.11.1.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/signalwire/freeswitch/releases/tag/v1.11.1
security-advisories@github.com https://github.com/signalwire/freeswitch/security/advisories/GHSA-2v74-pcgh-75wg

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:* freeswitch >= None < 1.11.1

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
freeswitch edge-main 1.10.12-r5 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch edge-main 1.10.12-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch edge-main 1.10.12-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch edge-main 1.10.12-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch edge-main 1.10.12-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch edge-main 1.10.12-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch edge-main 1.10.11-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch edge-main 1.10.11-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch edge-main 1.10.11-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch edge-main 1.10.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch 3.24-main 1.10.12-r5 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch 3.23-main 1.10.12-r5 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch 3.23-main 1.10.12-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch 3.22-main 1.10.12-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch 3.22-main 1.10.12-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch 3.22-main 1.10.12-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch 3.22-main 1.10.12-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch 3.22-main 1.10.11-r0 None possibly vulnerable
freeswitch 3.22-main 1.10.7-r0 None possibly vulnerable
freeswitch 3.21-main 1.10.11-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch 3.21-main 1.10.11-r0 None possibly vulnerable
freeswitch 3.21-main 1.10.7-r0 None possibly vulnerable
freeswitch 3.20-main 1.10.11-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch 3.20-main 1.10.7-r0 None possibly vulnerable
freeswitch 3.19-main 1.10.11-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
freeswitch 3.19-main 1.10.7-r0 None possibly vulnerable