Resource exhaustion in Janus WebRTC Server - #VU151861
Published: September 23, 2026
Vulnerability identifier: #VU151861
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in the videoroom create request handler when processing a create request containing an excessively large threads value. A remote user can submit a crafted create request to cause a denial of service.
The helper-thread creation loop holds rooms_mutex, blocking other videoroom operations while allocations are attempted.
Affected software
Janus WebRTC Server
Remediation
Install security update from vendor's website.
Janus WebRTC Server - addressed in versions 0.16.2, 1.4.2