AVideo Allows Unauthenticated Live Stream Control via Token Verification URL Override in control.json.php

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2026-33716: 0.45% estimated exploitation activity in the next 30 days; percentile 38.75 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The standalone live stream control endpoint at plugin/Live/standAloneFiles/control.json.php accepts a user-supplied streamerURL parameter that overrides where the server sends token verification requests. An attacker can redirect token verification to a server they control that always returns {"error": false}, completely bypassing authentication. This grants unauthenticated control over any live stream on the platform, including dropping active publishers, starting/stopping recordings, and probing stream existence. Details The vulnerability exists because the streamerURL parameter is accepted directly from user input with no validation: plugin/Live/standAloneFiles/control.json.php:77-79 — User input overrides server config: plugin/Live/standAloneFiles/control.json.php:83-91 — The user-controlled value is assigned to the request object: plugin/Live/standAloneFiles/control.json.php:115-126 — Token verification is sent to the attacker-controlled URL: The legitimate…

Published by the source

25 Mar 2026, 21:28 UTC

Last modified by the source

25 Mar 2026, 21:28 UTC

Source last checked

26 Oct 2026, 14:39 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-9hv9-gvwm-95f2

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# Patch Next advisory brief: CVE-2026-33716

Advisory: AVideo Allows Unauthenticated Live Stream Control via Token Verification URL Override in control.json.php
IDs: CVE-2026-33716, GHSA-9hv9-gvwm-95f2
Record: https://patchnext.com/advisories/cve-2026-33716 (revision 1, source checked 26 Oct 2026, 14:39 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.4)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist wwbn/avideo: affected <= 26.0

## Suggested inspection (read-only)
- Packagist wwbn/avideo: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on wwbn/avideo.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-9hv9-gvwm-95f2 (GitHub-reviewed advisory GHSA-9hv9-gvwm-95f2 lists affected ranges: Packagist wwbn/avideo >=0 <=26.0)

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