CVE-2026-49843

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, modverto's JSON-RPC handler bound the connection to the client-supplied sessid on the fir...

EUVD-2026-35495

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, modverto's checkauth userauth branch wrote request-supplied userVariables into the...

CVE-2026-49848

FreeSWITCH CVE-2026-49848: In mod_verto, the pre-authentication check_auth path writes request-supplied userVariables into the connection state before password comparison. Writes are append-only and the connection isn’t closed on a failed compare, so values from bad-password attempts persist on t...

CVE-2026-49843

FreeSWITCH vulnerability CVE-2026-49843 affects mod_verto before version 1.11.1. The JSON-RPC handler binds the client-supplied sessid on the first frame prior to authentication, inserting the connection into the global session hash and evicting any prior occupant on key collision (sending verto....

CVE-2026-49842

CVE-2026-49842 - FreeSWITCH mod_verto pre-auth bandwidth amplification : Before v1.11.1, FreeSWITCH’s mod_verto WebSocket frame loop processed a #-prefixed speed-test protocol (#SPU/#SPB/#SPE) prior to authentication. The payload size in #SPU was parsed with atoi() and non-positive values were re...

CVE-2026-49841

FreeSWITCH is affected by a pre-authentication heap overflow in the mod_verto HTTP POST body read. Before version 1.11.1, the mod_verto HTTP request handler allocates a fixed 2 MiB buffer for application/x-www-form-urlencoded bodies but accepts Content-Length up to just under 10 MiB. The body-rea...

PT-2026-47852

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 check auth userauth branch wrote request-supplied userVariables into the...