GPAC 26.07.0 WebSocket src/utils/rmt_ws.c rmt_client_handle_ws_frame payload_size heap-based overflow

Summaryinfo

A vulnerability classified as critical has been found in GPAC 26.07.0. This vulnerability affects the function rmt_client_handle_ws_frame of the file src/utils/rmt_ws.c of the component WebSocket Handler. The manipulation of the argument payload_size leads to heap-based overflow. This vulnerability is documented as CVE-2026-92399. The attack can be initiated remotely. Additionally, an exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in GPAC 26.07.0. This issue affects the function rmt_client_handle_ws_frame of the file src/utils/rmt_ws.c of the component WebSocket Handler. The manipulation of the argument payload_size with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-92399. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

Upgrading to version abi-16.26 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 37bccbb30cf53a0e1a084cea9a1ce422b3ddfe12 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Multimedia Player Software

Name

• GPAC

Version

• 26.07.0

License

• open-source

Website

• Product: https://github.com/gpac/gpac/

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Accepted

• Submit #940250: GPAC v26.07.0 (commit 2d7da22e) / master HEAD 6fed75df — fixed in 37bccbb Memory Corruption (CWE-122: Heap-based Buffer Overflow) (by JerryGW)

Be aware that VulDB is the high quality source for vulnerability data.

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