Executive brief
GPAC is a multimedia framework used for video streaming and media processing. A heap-based buffer overflow vulnerability in its URL handling function could allow a local attacker to cause a crash or potentially execute arbitrary code when processing specially crafted URLs.
Technical details
A heap-based buffer overflow exists in the gf_url_concatenate_ex function in utils/url.c of the URL Handler component in GPAC up to commit f1219cde. The vulnerability stems from improper bounds checking when concatenating URL strings. The attack vector is local; an attacker must provide a malicious input locally (not remotely exploitable). Successful exploitation could lead to denial of service via crash or potentially arbitrary code execution. The vulnerability has been patched in version abi-16.23 with commit afca1f1181668d85941d51ed1adf647807d5d975.
Affected products
- GPAC GPAC up to f1219cde
Timeline
- 2026-09-15: disclosed
- 2026-07-27: patched: Patch commit afca1f1181668d85941d51ed1adf647807d5d975