CVE-2026-68555
Description
A flaw was found in Coturn. An authenticated user can exploit a vulnerability in the mobility feature when it is enabled. By repeatedly initiating and resuming allocations without completing the handoff process, the server's session management is bypassed. This allows the attacker to retain an unbounded number of server-side sessions, leading to the exhaustion of process memory and ultimately causing a Denial of Service (DoS) for legitimate users.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Mitigation
To mitigate this issue, disable the `--mobility` feature in Coturn if it is not required for your deployment. Disabling mobility prevents the vulnerable code path from being exercised. Consult Coturn documentation for specific configuration steps to disable this feature. A service restart will be required for changes to take effect and may impact active connections.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
When allocating resources without limits, an attacker could prevent other systems, applications, or processes from accessing the same type of resource. It can be easy for an attacker to consume many resources by rapidly making many requests or causing larger resources to be used than is needed.
Frequently Asked Questions
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