XML Parsing Vulnerability in FreeSWITCH Software Defined Telecom Stack
CVE-2026-49472

5.3MEDIUM

Key Information:

Vendor

Signalwire

Status
Freeswitch
Vendor
CVE Published:
9 June 2026

What is CVE-2026-49472?

FreeSWITCH, an advanced Software Defined Telecom Stack, prior to version 1.11.0, contains a significant XML parsing vulnerability within the PREFIX(prologTok)() function. This function, derived from an outdated version of libexpat, lacks crucial security patches. Consequently, systems utilizing versions prior to 1.11.0 remain exposed to potential exploits. Users are strongly urged to upgrade to version 1.11.0, where this vulnerability has been addressed and patched, ensuring a more secure implementation.

Affected Version(s)

freeswitch < 1.11.0

References

https://github.com/signalwire/freeswitch/security/advisor...
x_refsource_CONFIRM
https://github.com/signalwire/freeswitch/releases/tag/v1....
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.