CVE-2026-49842

Name
CVE-2026-49842
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, mod_verto's WebSocket frame loop intercepts a #-prefixed speed-test protocol (#SPU / #SPB / #SPE) before any authentication check. The declared payload size in #SPU was parsed with atoi() and only rejected non-positive values, so an unauthenticated peer could request up to INT_MAX bytes. The server then wrote roughly size * 10 bytes back during the download phase, on the order of 20 GB per request, yielding strong outbound bandwidth amplification from a short request. 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-p3gx-p2w7-wp35

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