Vulnerability Description
GPAC is an open-source multimedia framework. Prior to commit 86b0e36, a heap-based buffer overflow (write) vulnerability was discovered in GPAC MP4Box. The vulnerability exists in the gf_xml_parse_bit_sequence_bs function in utils/xml_bin_custom.c when processing a crafted NHML file containing malicious <BS> (BitSequence) elements. An attacker can exploit this by providing a specially crafted NHML file, causing an out-of-bounds write on the heap. This issue has been via commit 86b0e36.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gpac | Gpac | < 2026-03-17 |
Related Weaknesses (CWE)
References
- https://github.com/gpac/gpac/commit/86b0e36ea4c71402fbdaf7e13d73ba8841003e72Patch
- https://github.com/gpac/gpac/security/advisories/GHSA-3jw5-9pmw-vmfgExploitVendor Advisory
- https://github.com/gpac/gpac/security/advisories/GHSA-3jw5-9pmw-vmfgExploitVendor Advisory
FAQ
What is CVE-2026-33144?
CVE-2026-33144 is a vulnerability with a CVSS score of 5.8 (MEDIUM). GPAC is an open-source multimedia framework. Prior to commit 86b0e36, a heap-based buffer overflow (write) vulnerability was discovered in GPAC MP4Box. The vulnerability exists in the gf_xml_parse_bit...
How severe is CVE-2026-33144?
CVE-2026-33144 has been rated MEDIUM with a CVSS base score of 5.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33144?
Check the references section above for vendor advisories and patch information. Affected products include: Gpac Gpac.