AVideo: Reflected XSS via Unescaped ip Parameter in User_Location testIP.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-2026-34739: 0.22% estimated exploitation activity in the next 30 days; percentile 13.11 (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 UserLocation plugin's testIP.php page reflects the ip request parameter directly into an HTML input element without applying htmlspecialchars() or any other output encoding. This allows an attacker to inject arbitrary HTML and JavaScript via a crafted URL. Although the page is restricted to admin users, AVideo's SameSite=None cookie configuration allows cross-origin exploitation, meaning an attacker can lure an admin to a malicious link that executes JavaScript in their authenticated session. Details At plugin/UserLocation/testIP.php:16, the ip parameter is read from the request without sanitization: At line 34, the value is echoed directly into an HTML input element's value attribute: No htmlspecialchars() is applied, allowing an attacker to break out of the value attribute and inject arbitrary HTML/JavaScript. While the page requires admin authentication to access, AVideo sets session cookies with SameSite=None. When an admin clicks a link from an external site (email,…

Published by the source

1 Apr 2026, 21:08 UTC

Last modified by the source

2 Apr 2026, 11:32 UTC

Source last checked

26 Oct 2026, 14:39 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-jqrj-chh6-8h78

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# Patch Next advisory brief: CVE-2026-34739

Advisory: AVideo: Reflected XSS via Unescaped ip Parameter in User_Location testIP.php
IDs: CVE-2026-34739, GHSA-jqrj-chh6-8h78
Record: https://patchnext.com/advisories/cve-2026-34739 (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-jqrj-chh6-8h78 (GitHub-reviewed advisory GHSA-jqrj-chh6-8h78 lists affected ranges: Packagist wwbn/avideo >=0 <=26.0)

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