WWBN AVideo has an incomplete fix for CVE-2026-33039: SSRF

Exploitation

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

CVSS

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

EPSS

• CVE-2026-41055: 0.38% estimated exploitation activity in the next 30 days; percentile 31.77 (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 incomplete SSRF fix in AVideo's LiveLinks proxy adds isSSRFSafeURL() validation but leaves DNS TOCTOU vulnerabilities where DNS rebinding between validation and the actual HTTP request redirects traffic to internal endpoints. Affected Package - Ecosystem: Other - Package: AVideo - Affected versions: < commit 0e56382921fc71e64829cd1ec35f04e338c70917 - Patched versions: = commit 0e56382921fc71e64829cd1ec35f04e338c70917 Details The plugin/LiveLinks/proxy.php endpoint proxies live stream URLs. The fix adds isSSRFSafeURL() check on the initial URL, redirect URL validation, and followlocation=0 in the getheaders() context. However, multiple DNS TOCTOU vulnerabilities remain. For the initial URL, isSSRFSafeURL() resolves DNS once for validation, but getheaders() resolves DNS again independently. A DNS rebinding attack with TTL=0 returns a safe external IP for the first resolution and an internal IP for the second. The same TOCTOU exists for redirect URLs: isSSRFSafeURL()…

Published by the source

14 Apr 2026, 23:15 UTC

Last modified by the source

24 Apr 2026, 20:40 UTC

Source last checked

26 Oct 2026, 14:39 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-793q-xgj6-7frp

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# Patch Next advisory brief: CVE-2026-41055

Advisory: WWBN AVideo has an incomplete fix for CVE-2026-33039: SSRF
IDs: CVE-2026-41055, GHSA-793q-xgj6-7frp
Record: https://patchnext.com/advisories/cve-2026-41055 (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 5.3)
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 <= 29.0

## 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-793q-xgj6-7frp (GitHub-reviewed advisory GHSA-793q-xgj6-7frp lists affected ranges: Packagist wwbn/avideo >=0 <=29.0)

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