CVE-2026-49847

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 1.11.1, a single unauthenticated WebSocket frame containing a deeply nested JSON document crashes the FreeSWITCH process via stack overflow, terminating all calls and sessions on the host. The recursion drives the worker thread's stack pointer into the stack guard page, raising SIGSEGV from the kernel before any usable write primitive develops. This issue has been patched in version 1.11.1.

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Produits concernés

• signalwire freeswitch
• Freeswitch freeswitch

Scores CVSS

Faiblesses (CWE)

• CWE-674

Références

• https://github.com/signalwire/freeswitch/releases/tag/v1.11.1 Release Notes
• https://github.com/signalwire/freeswitch/security/advisories/GHSA-2v74-pcgh-75wg Third Party Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories