AVideo Affected by SSRF in BulkEmbed Thumbnail Fetch Allows Reading Internal Network Resources

Exploitation

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

CVSS

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

EPSS

• CVE-2026-33294: 0.28% estimated exploitation activity in the next 30 days; percentile 20.12 (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 BulkEmbed plugin's save endpoint (plugin/BulkEmbed/save.json.php) fetches user-supplied thumbnail URLs via urlgetcontents() without SSRF protection. Unlike all six other URL-fetching endpoints in AVideo that were hardened with isSSRFSafeURL(), this code path was missed. An authenticated attacker can force the server to make HTTP requests to internal network resources and retrieve the responses by viewing the saved video thumbnail. Details When saving bulk-embedded videos, user-supplied thumbnail URLs from $POST['itemsToSave'][x]['thumbs'] flow directly into urlgetcontents() with no SSRF validation: plugin/BulkEmbed/save.json.php:68-105 The urlgetcontents() function internally calls isValidURLOrPath() which only validates URL format (scheme, host presence) — it does not block requests to private IPs, localhost, or cloud metadata endpoints. All other URL-fetching endpoints are protected. The isSSRFSafeURL() function is called in: - plugin/Scheduler/Scheduler.php -…

Published by the source

19 Mar 2026, 17:12 UTC

Last modified by the source

25 Mar 2026, 18:34 UTC

Source last checked

26 Oct 2026, 14:39 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-66cw-h2mj-j39p

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# Patch Next advisory brief: CVE-2026-33294

Advisory: AVideo Affected by SSRF in BulkEmbed Thumbnail Fetch Allows Reading Internal Network Resources
IDs: CVE-2026-33294, GHSA-66cw-h2mj-j39p
Record: https://patchnext.com/advisories/cve-2026-33294 (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 5.0)
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 <= 25.0

## 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-66cw-h2mj-j39p (GitHub-reviewed advisory GHSA-66cw-h2mj-j39p lists affected ranges: Packagist wwbn/avideo >=0 <=25.0)

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