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Authenticated Server-Side Request Forgery via downloadURL in aVideoEncoder.json.php

High
DanielnetoDotCom published GHSA-h39h-7cvg-q7j6 Feb 23, 2026

Package

AVideo (AVideo)

Affected versions

< 22

Patched versions

22

Description

Vulnerability Type

Authenticated Server-Side Request Forgery (SSRF) — CWE-918.

Affected Product/Versions

AVideo versions prior to 22 (tested on AVideo 21.x).

Root Cause Summary

The aVideoEncoder.json.php API endpoint accepts a downloadURL parameter and fetches the referenced resource server-side without proper validation or an allow-list. This allows authenticated users to trigger server-side requests to arbitrary URLs (including internal network endpoints).

Impact Summary

An authenticated attacker can leverage SSRF to interact with internal services and retrieve sensitive data (e.g., internal APIs, metadata services), potentially leading to further compromise depending on the deployment environment.

Resolution/Fix

This issue has been fixed in AVideo version 22. Users should upgrade to version 22 as soon as possible.

Credits/Acknowledgement

Thanks to Arkadiusz Marta for responsibly reporting this issue.

Severity

High

CVE ID

CVE-2026-27732

Weaknesses

Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Learn more on MITRE.

Credits