AVideo has Reflected XSS via unlockPassword Parameter in forbiddenPage.php and warningPage.php

Exploitation

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

CVSS

6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

• CVE-2026-33499: 0.24% estimated exploitation activity in the next 30 days; percentile 15.20 (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 view/forbiddenPage.php and view/warningPage.php templates reflect the $REQUEST['unlockPassword'] parameter directly into an HTML <input tag's attributes without any output encoding or sanitization. An attacker can craft a URL that breaks out of the value attribute and injects arbitrary HTML attributes including JavaScript event handlers, achieving reflected XSS against any visitor who clicks the link. Details When a user visits a password-protected channel, view/channel.php:22 calls: The forbiddenPage() function in objects/functionsSecurity.php:520 checks whether the supplied password matches. If it doesn't (or no password was submitted), it includes view/forbiddenPage.php at line 561. In view/forbiddenPage.php:31-35, the raw request parameter is reflected into HTML: The getInputPassword() function at objects/functions.php:4490 outputs the $attributes string directly into the <input tag at line 4502: The unlockPassword parameter is not listed in any of the security filter…

Published by the source

20 Mar 2026, 20:56 UTC

Last modified by the source

25 Mar 2026, 20:31 UTC

Source last checked

26 Oct 2026, 14:39 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-7292-w8qp-mhq2

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# Patch Next advisory brief: CVE-2026-33499

Advisory: AVideo has Reflected XSS via unlockPassword Parameter in forbiddenPage.php and warningPage.php
IDs: CVE-2026-33499, GHSA-7292-w8qp-mhq2
Record: https://patchnext.com/advisories/cve-2026-33499 (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: Medium (CVSS 6.1)
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-7292-w8qp-mhq2 (GitHub-reviewed advisory GHSA-7292-w8qp-mhq2 lists affected ranges: Packagist wwbn/avideo >=0 <=26.0)

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