Buffer overflow in Gpac
CVE-2026-4015
A weakness has been identified in GPAC 26.03-DEV. Affected is the function txtin_process_texml of the file src/filters/load_text.c of the component TeXML File Parser. Executing a manipulation can lead to stack-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been made available to the public and could be used for attacks. This patch is called d29f6f1ada5cc284cdfa783b6f532c7d8bd049a5. Applying a patch is advised to resolve this issue.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (5.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- Gpac — versions 26.03-DEV
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/gpac/gpac/issues/3467 (issue-tracking)
- github.com/gpac/gpac/issues/3467 (issue-tracking)
- github.com/user-attachments/files/25493992/poc_texml_overflow.py (exploit)
- github.com/gpac/gpac/commit/d29f6f1ada5cc284cdfa783b6f532c7d8bd049a5 (patch)
- github.com/gpac/gpac/ (product)
Frequently asked questions
- What is CVE-2026-4015?
- CVE-2026-4015 is a medium-severity vulnerability in Gpac, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2026-03-12.
- How severe is CVE-2026-4015?
- Medium severity. CVSS v3 base score is 5.3 out of 10.