Quick answers
- Is CVE-2026-108539 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-108539 being exploited in the wild.
- How severe is CVE-2026-108539?
- Medium severity, with a CVSS score of 6.3, published 11 October 2026.
- Which products and versions are affected?
- Gpac up to 26.07.0.
- Is there a fix for CVE-2026-108539?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-108539 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-108539?
- Check whether you run Gpac at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A use-after-free vulnerability exists in the gf_fq_pop function of filter_core/filter_queue.c in GPAC's MP4Box component. The vulnerability can be triggered remotely during manipulation of media files, allowing an attacker to read or write memory after it has been freed. A public proof-of-concept exploit is available.
Affected products
- GPAC GPAC up to 26.07.0
Timeline
- 2026-10-11: disclosed