{"id":"CVE-2026-116787","published":"2026-11-05T20:17:46.073","lastModified":"2026-11-05T22:38:13.080","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 1.11.2, mod_event_socket used an unauthenticated Content-Length value directly as the allocation size for an Event Socket message body. Negative or extremely large values could overflow the terminator calculation or force an allocation failure through a helper that aborts the FreeSWITCH process. The header is parsed before the Event Socket password, so any host admitted by apply-inbound-acl can trigger termination with its first packet; the default loopback ACL limits ordinary installations to local clients. The outbound socket dialplan path is also affected when FreeSWITCH connects to a hostile application server, and process termination drops every active call until the service is restarted. This issue is fixed in version 1.11.2.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-190","CWE-789"],"vendors":[],"products":[],"references":[{"url":"https://github.com/signalwire/freeswitch/commit/a097e124213c164845dcaaa8feed2e70bc1e7191","tags":[]},{"url":"https://github.com/signalwire/freeswitch/releases/tag/v1.11.2","tags":[]},{"url":"https://github.com/signalwire/freeswitch/security/advisories/GHSA-j27c-m99r-8pc3","tags":[]}],"exploitRefs":[{"url":"https://github.com/signalwire/freeswitch/commit/a097e124213c164845dcaaa8feed2e70bc1e7191","tags":[]},{"url":"https://github.com/signalwire/freeswitch/releases/tag/v1.11.2","tags":[]},{"url":"https://github.com/signalwire/freeswitch/security/advisories/GHSA-j27c-m99r-8pc3","tags":[]}],"hasPoc":true,"ai":null}