CVE-2026-27821
GPAC NHML Demuxer (dmx_nhml.c) Vulnerable to Stack Buffer Overflow
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-121 |
| Vendor | gpac |
| Product | gpac |
| Published | Feb 26, 2026 |
| Last Updated | Feb 26, 2026 |
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Affected Versions
gpac / gpac
<= 26.02.0