CVE catalog
CVE-2026-27821
UBUNTU-CVE-2026-27821
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.32% · Oct 25, 2026
GPAC is an open-source multimedia framework. In versions up to and including 26.02.0, a stack buffer overflow occurs during NHML file parsing in `src/filters/dmx_nhml.c`. The value of the xmlHeaderEnd XML attribute is copied from att->value into szXmlHeaderEnd[1000] using strcpy() without any length validation. If the input exceeds 1000 bytes, it overwrites beyond the stack buffer boundary. Commit 9bd7137fded2db40de61a2cf3045812c8741ec52 patches the issue.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | gpac | 11 | 1.0.1+dfsg1-4 | vulnerable |
| Debian | gpac | 11 | 1.0.1+dfsg1-4+deb11u1 | vulnerable |
| Debian | gpac | 11 | 1.0.1+dfsg1-4+deb11u2 | vulnerable |
| Debian | gpac | 11 | 1.0.1+dfsg1-4+deb11u3 | vulnerable |
| Debian | gpac | 11 | 1.0.1+dfsg1-5 | vulnerable |
| Debian | gpac | 11 | 2.0.0+dfsg1-1 | vulnerable |
| Debian | gpac | 11 | 2.0.0+dfsg1-2 | vulnerable |
| Debian | gpac | 11 | 2.0.0+dfsg1-4 | vulnerable |
| Debian | gpac | 11 | 2.2.1+dfsg1-1 | vulnerable |
| Debian | gpac | 11 | 2.2.1+dfsg1-2 | vulnerable |
| Debian | gpac | 11 | 2.2.1+dfsg1-3 | vulnerable |
| Debian | gpac | 11 | 2.2.1+dfsg1-3.1 | vulnerable |
| Debian | gpac | 11 | 2.2.1+dfsg1-3.1~exp1 | vulnerable |
| Ubuntu | gpac | pro | 2.2.1+dfsg1-3 | vulnerable |
| Ubuntu | gpac | pro | 2.2.1+dfsg1-3.1 | vulnerable |
| Ubuntu | gpac | pro | 2.2.1+dfsg1-3.1build1 | vulnerable |
| Ubuntu | gpac | pro | 2.2.1+dfsg1-3.1build2 | vulnerable |
| Ubuntu | gpac | pro | 2.2.1+dfsg1-3.1ubuntu0.1~esm2 | vulnerable |
Fixed-version evidence
OpenFactory catalog packages
No matching packages in this catalog.
Observed: