Medium 5.3Published Jun 9, 2026

CVE-2026-49472FreeSWITCH includes a vulnerable function, PREFIX(prologTok)() from libexpat

Updated under an hour ago (Oct 27, 2026, 2:20 AM ET)

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It affects signalwire freeswitch and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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a vulnerable function, PREFIX(prologTok)(), in libs/xmlrpc-c/lib/expat/xmltok/xmltok_impl.c, which was cloned from an outdated and vulnerable version in libexpat/libexpat.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.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-116
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jun 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

signalwire freeswitch signalwire:freeswitch (from the name)	before 1.11.0	CNA record
freeswitch freeswitch freeswitch:freeswitch	before 1.11.0	NVD

References

References

https://github.com/signalwire/freeswitch/security/advisories/GHSA-4jm3-xpcm-mwwq	x-refsource-confirm, third-party-advisory
https://github.com/signalwire/freeswitch/releases/tag/v1.11.0	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.