CVE-2026-49472: CWE-116: Improper Encoding or Escaping of Output in signalwire freeswitch
CVE-2026-49472 is a medium severity vulnerability in signalwire freeswitch prior to version 1.11.0. It involves improper encoding or escaping of output in a function cloned from an outdated vulnerable version of libexpat. This issue has been addressed and patched in version 1.11.0.
AI Analysis
Technical Summary
FreeSWITCH versions before 1.11.0 contain a vulnerability in the function PREFIX(prologTok)() located in libs/xmlrpc-c/lib/expat/xmltok/xmltok_impl.c. This function was cloned from an outdated and vulnerable version of libexpat and did not receive the necessary security patch for improper encoding or escaping of output (CWE-116). The vulnerability was fixed in FreeSWITCH version 1.11.0.
Potential Impact
The vulnerability does not impact confidentiality or integrity but has a high impact on availability, as indicated by the CVSS vector (AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H). This suggests potential denial of service conditions may be caused by the improper encoding or escaping of output in the affected function.
Mitigation Recommendations
A fix is available in FreeSWITCH version 1.11.0. Users should upgrade to version 1.11.0 or later to remediate this vulnerability. Patch status beyond this is not explicitly stated in vendor advisories, so users should verify with official FreeSWITCH sources for the latest remediation guidance.
CVE-2026-49472: CWE-116: Improper Encoding or Escaping of Output in signalwire freeswitch
Description
CVE-2026-49472 is a medium severity vulnerability in signalwire freeswitch prior to version 1.11.0. It involves improper encoding or escaping of output in a function cloned from an outdated vulnerable version of libexpat. This issue has been addressed and patched in version 1.11.0.
CVSS v3.1
Score 5.3medium
Affected software
pkg:github/signalwire/freeswitchRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
FreeSWITCH versions before 1.11.0 contain a vulnerability in the function PREFIX(prologTok)() located in libs/xmlrpc-c/lib/expat/xmltok/xmltok_impl.c. This function was cloned from an outdated and vulnerable version of libexpat and did not receive the necessary security patch for improper encoding or escaping of output (CWE-116). The vulnerability was fixed in FreeSWITCH version 1.11.0.
Potential Impact
The vulnerability does not impact confidentiality or integrity but has a high impact on availability, as indicated by the CVSS vector (AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H). This suggests potential denial of service conditions may be caused by the improper encoding or escaping of output in the affected function.
Mitigation Recommendations
A fix is available in FreeSWITCH version 1.11.0. Users should upgrade to version 1.11.0 or later to remediate this vulnerability. Patch status beyond this is not explicitly stated in vendor advisories, so users should verify with official FreeSWITCH sources for the latest remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-30T04:17:43.094Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a283e988dd33fbd8553f3f3
Added to database: 06/09/2026, 16:26:00 UTC
Last enriched: 06/17/2026, 09:13:59 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 50
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