CVE-2026-71616 in GPAC
Summary
by MITRE • 09/09/2026
An issue in GPAC c2dee3aff638cd96f9617ac5b17dc2868cd90ef3 allows an attacker to cause a denial of service via the function gf_route_media_complete_object(). Fixed in 3c4e6c5b3e0c6fa9b16d55599701a08354538fab.
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Analysis
by VulDB Data Team • 09/09/2026
The vulnerability identified within the GPAC multimedia framework, specifically affecting commit c2dee3aff638cd96f9617ac5b17dc2868cd90ef3 and resolved in 3c4e6c5b3e0c6fa9b16d55599701a08354538fab, centers on a critical flaw within the gf_route_media_complete_object function. This component is responsible for handling media routing operations, which are essential for processing and directing multimedia streams in real-time applications. The core technical issue stems from improper input validation or state management during the completion of object routing processes. When an attacker crafts specific malformed inputs or triggers a sequence of events that forces the function to process unexpected data states, it leads to a failure condition that disrupts normal execution flow. This typically manifests as a crash due to null pointer dereference, buffer overflow, or infinite loop conditions, resulting in the immediate termination of the application thread or the entire process.
From an operational perspective, this vulnerability poses a significant risk to services relying on GPAC for media processing, such as streaming servers, video conferencing platforms, and multimedia playback applications. A successful exploitation allows a remote attacker to cause a denial of service by forcing these critical services to crash repeatedly. This disruption prevents legitimate users from accessing audio or video content, effectively rendering the service unavailable. In environments where high availability is paramount, such as live broadcasting or enterprise communication systems, this vulnerability can lead to substantial downtime and loss of productivity. The impact is particularly severe if the affected process runs with elevated privileges, although even in standard user contexts, it disrupts local media consumption capabilities.
The technical classification of this flaw aligns closely with CWE-401, which describes a missing release of memory or other resource after allocation, often leading to instability when resources are not properly managed during error paths. Additionally, the exploitation vector relates to CWE-20, Improper Input Validation, as the function fails to adequately sanitize or verify inputs before processing them in critical routing logic. In terms of adversary tactics, this vulnerability supports ATT&CK technique T1499, Endpoint Denial of Service, where an attacker aims to exhaust resources or crash systems rather than exfiltrate data. The lack of robust error handling within gf_route_media_complete_object means that maliciously crafted media files or network packets can trigger the fault condition without requiring authentication in many default configurations.
Mitigation strategies must prioritize immediate patching by updating GPAC to version 3c4e6c5b3e0c6fa9b16d55599701a08354538fab or later, which contains the necessary code corrections to handle edge cases safely. For organizations unable to patch immediately, deploying network-level filtering rules can help mitigate risk by blocking suspicious media traffic patterns that are known to trigger this specific function's failure mode. Implementing strict input validation at the application gateway level and ensuring that multimedia processing services run with minimal required privileges will also reduce the blast radius of any potential exploitation attempts. Continuous monitoring for abnormal process termination events related to GPAC components can aid in early detection of attempted exploits, allowing security teams to respond before widespread service disruption occurs.