CVE-2026-49472

MEDIUM

FreeSWITCH includes a vulnerable function, PREFIX(prologTok)() from libexpat

Title source: cna

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 1.11.0, FreeSWITCH includes a vulnerable function, PREFIX(prologTok)(), in libs/xmlrpc-c/lib/expat/xmltok/xmltok_impl.c, which was cloned from an outdated and vulnerable version in libexpat/libexpat. The function did not receive the corresponding security patch. This issue has been patched in version 1.11.0.

References (2)

Core 2

Core References

X_Refsource_Confirm x_refsource_confirm

https://github.com/signalwire/freeswitch/security/advisories/GHSA-4jm3-xpcm-mwwq

X_Refsource_Misc x_refsource_misc

https://github.com/signalwire/freeswitch/releases/tag/v1.11.0

Scores

CVSS v3 5.3

EPSS 0.0022

EPSS Percentile 12.7%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-116

Status published

Products (2)

freeswitch/freeswitch < 1.11.0

signalwire/freeswitch < 1.11.0

Published Jun 09, 2026

Tracked Since Jun 09, 2026