CVE-2026-27821

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/gpac/gpac/commit/9bd7137fded2db40de61a2cf3045812c8741ec52	Patch
https://github.com/gpac/gpac/security/advisories/GHSA-q7qh-8r2r-q559	Exploit Vendor Advisory
https://github.com/gpac/gpac/security/advisories/GHSA-q7qh-8r2r-q559	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gpac:gpac:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-26 00:16

Updated : 2026-03-11 23:23

NVD link : CVE-2026-27821

Mitre link : CVE-2026-27821

CVE.ORG link : CVE-2026-27821

JSON object : View

Products Affected

gpac

gpac

CWE

CWE-121

Stack-based Buffer Overflow

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