WWBN AVideo has Stored XSS via Malicious EPG XML Program Titles in AVideo EPG Page

Exploitation

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

CVSS

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

EPSS

• CVE-2026-39367: 0.19% estimated exploitation activity in the next 30 days; percentile 9.28 (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 AVideo's EPG (Electronic Program Guide) feature parses XML from user-controlled URLs and renders programme titles directly into HTML without any sanitization or escaping. A user with upload permission can set a video's epglink to a malicious XML file whose <title elements contain JavaScript. This payload executes in the browser of any unauthenticated visitor to the public EPG page, enabling session hijacking and account takeover. Details The vulnerability spans three files in the data flow: 1. Entry point — objects/videoAddNew.json.php:117-119 The epglink parameter is stored with only a URL format check: This requires User::canUpload() (line 10) — not admin, just basic upload permission. 2. XML parsing — objects/EpgParser.php:321 Programme titles are extracted as raw strings with no sanitization: 3. Sink — plugin/PlayerSkins/epg.php:343-351 Programme titles are interpolated directly into HTML output without htmlspecialchars() or any escaping: Notably, the channel display-name…

Published by the source

8 Apr 2026, 00:08 UTC

Last modified by the source

8 Apr 2026, 00:08 UTC

Source last checked

26 Oct 2026, 14:39 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-rqp3-gf5h-mrqx

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# Patch Next advisory brief: CVE-2026-39367

Advisory: WWBN AVideo has Stored XSS via Malicious EPG XML Program Titles in AVideo EPG Page
IDs: CVE-2026-39367, GHSA-rqp3-gf5h-mrqx
Record: https://patchnext.com/advisories/cve-2026-39367 (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 5.4)
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-rqp3-gf5h-mrqx (GitHub-reviewed advisory GHSA-rqp3-gf5h-mrqx lists affected ranges: Packagist wwbn/avideo >=0 <=26.0)

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