CVE-2026-92399: GPAC WebSocket rmt_ws.c rmt_client_handle_ws_frame heap-based overflow
A vulnerability was determined in GPAC 26.07.0. This affects the function rmtclienthandlewsframe of the file src/utils/rmtws.c of the component WebSocket Handler. Executing a manipulation of the argument payloadsize can lead to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version abi-16.26 is able to mitigate this issue. This patch is called 37bccbb30cf53a0e1a084cea9a1ce422b3ddfe12. Upgrading the affected component is recommended.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
GPACto a version that resolves this vulnerability.Fixed in abi-16.26Patch 37bccbb30cf53a0e1a084cea9a1ce422b3ddfe12
Event History
Frequently Asked Questions
Who is exposed to this issue?
Systems running GPAC 26.07.0 with the affected WebSocket Handler component are exposed. The attack can be launched remotely, so network-reachable deployments are the relevant exposure scenario.
What does an attacker need to exploit it?
An attacker needs to manipulate the WebSocket frame payload_size argument to trigger the heap-based buffer overflow. The supplied severity vector indicates no privileges or user interaction are required and that attack complexity is low.
Is exploit code available?
Yes. The exploit has been publicly disclosed and may be used.
What should be done if the affected version is in use?
Upgrade the affected component to version abi-16.26, which mitigates the issue. The relevant patch is 37bccbb30cf53a0e1a084cea9a1ce422b3ddfe12.