signalwire FreeSWITCH up to 1.10.x xmltok_impl.c escape output

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.66+

Summaryinfo

A vulnerability identified as problematic has been detected in signalwire FreeSWITCH up to 1.10.x. This vulnerability affects unknown code in the library libs/xmlrpc-c/lib/expat/xmltok/xmltok_impl.c. This manipulation causes escape output. The identification of this vulnerability is CVE-2026-49472. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in signalwire FreeSWITCH up to 1.10.x. It has been declared as problematic. Affected by this vulnerability is some unknown functionality in the library libs/xmlrpc-c/lib/expat/xmltok/xmltok_impl.c. The manipulation with an unknown input leads to a escape output vulnerability. The CWE definition for the vulnerability is CWE-116. The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved. As an impact it is known to affect availability. The summary by CVE is:

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a vulnerable function, PREFIX(prologTok)(), in libs/xmlrpc-c/lib/expat/xmltok/xmltok_impl.c, which was cloned from an outdated and vulnerable version in libexpat/libexpat.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

The advisory is shared at github.com. This vulnerability is known as CVE-2026-49472 since 05/30/2026. The exploitation appears to be difficult. The attack can be launched remotely. Technical details are known, but no exploit is available.

Upgrading to version 1.11.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.1

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Escape output
CWE: CWE-116 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: FreeSWITCH 1.11.0

Timelineinfo

05/30/2026 CVE reserved
06/09/2026 +10 days Advisory disclosed
06/09/2026 +0 days VulDB entry created
06/09/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-4jm3-xpcm-mwwq
Status: Confirmed

CVE: CVE-2026-49472 (🔒)
GCVE (CVE): GCVE-0-2026-49472
GCVE (VulDB): GCVE-100-369889

Entryinfo

Created: 06/09/2026 21:28
Changes: 06/09/2026 21:28 (65)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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