CVE-2026-72748

Critical

Description

AVideo contains an unauthenticated arbitrary file write vulnerability in the aVideoEncoderChunk.json.php endpoint that allows remote attackers to write up to 4 GB of arbitrary content to the server filesystem via HTTP PUT requests without authentication. Attackers can exhaust disk space causing denial of service, poison the video encoding pipeline, or chain this with local file inclusion to achieve remote code execution.

SeverityCritical

CVSS9.1

Exploit probability—

ProductAVideo

PublishedAug 11, 2026

First seenAug 11, 2026

Weakness typeCWE-306Missing authentication for critical function

How to fix

Patches

github.com/WWBN/AVideo/commit/1b55a9b3c4911d2f31594ce2e60566c70c6b95e8

Vendor advisories

github.com/WWBN/AVideo/security/advisories/GHSA-v7p7-jccx-h37c

Affected products

Product	Affected versions	Fixed in
WWBN AVideo	29.0	—

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