🛡️ CVE-2026-27821
🟠 CVSS 7.8 — High ⚠️ Exploit Public CWE-121 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE CWE-121
Public Exploit ⚠️ Yes
Source NVD
Published 2026-02-26
Updated 2026-06-02
Modified 2026-03-11

Affected Packages

Software From version Fixed in
gpac 26.02.0

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