CVE-2026-27821

HIGH

7.8

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.

CVE Details

CVSS v3.1 Score7.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published2/26/2026

Last Modified3/11/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gpac:gpac

Weaknesses (CWE)

CWE-121

References

https://github.com/gpac/gpac/commit/9bd7137fded2db40de61a2cf3045812c8741ec52(security-advisories@github.com)

https://github.com/gpac/gpac/security/advisories/GHSA-q7qh-8r2r-q559(security-advisories@github.com)

https://github.com/gpac/gpac/security/advisories/GHSA-q7qh-8r2r-q559(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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