CVE-2026-49843

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, mod_verto's JSON-RPC handler bound the connection to the client-supplied sessid on the first frame, before the authentication gate. Binding inserts the connection into the global session hash and, on a key collision, drops the prior occupant of that slot — sending it a verto.punt, detaching its calls, and closing its socket. An unauthenticated network attacker who knows a target session UUID could therefore evict the legitimate client. This issue has been patched in version 1.11.1.

Traduire en français

Produits concernés

• signalwire freeswitch
• Freeswitch freeswitch

Scores CVSS

Faiblesses (CWE)

• CWE-287

Références

• https://github.com/signalwire/freeswitch/releases/tag/v1.11.1 Release Notes
• https://github.com/signalwire/freeswitch/security/advisories/GHSA-9457-fxr9-x78m Third Party Advisory

Ailleurs

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