CVE-2026-49848

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 connection state before comparing the supplied password. The writes are append-only and the connection is not closed on a failed compare, so values declared on bad-password attempts persisted on the same WebSocket and carried into a subsequent successful login on that connection. This issue has been patched in version 1.11.1.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/signalwire/freeswitch/releases/tag/v1.11.1	Release Notes
https://github.com/signalwire/freeswitch/security/advisories/GHSA-j38x-xm7f-9p2f	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-09 17:17

Updated : 2026-07-23 08:10

NVD link : CVE-2026-49848

Mitre link : CVE-2026-49848

CVE.ORG link : CVE-2026-49848

JSON object : View

Products Affected

freeswitch

freeswitch

CWE

CWE-287

Improper Authentication

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