SSRF in Wwbn Avideo
CVE-2026-33237
WWBN AVideo is an open source video platform. Prior to version 26.0, the Scheduler plugin's `run()` function in `plugin/Scheduler/Scheduler.php` calls `url_get_contents()` with an admin-configurable `callbackURL` that is validated only by `isValidURL()` (URL format check). Unlike other AVideo endpoints that were recently patched for SSRF (GHSA-9x67-f2v7-63rw, GHSA-h39h-7cvg-q7j6), the Scheduler's callback URL is never passed through `isSSRFSafeURL()`, which blocks requests to RFC-1918 private addresses, loopback, and cloud metadata endpoints. An admin can configure a scheduled task with an internal network `callbackURL` to perform SSRF against cloud infrastructure metadata services or internal APIs not otherwise reachable from the internet. Version 26.0 contains a patch for the issue.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (32.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Wwbn Avideo — versions < 26.0
Weakness classification (CWE)
References
- github.com/WWBN/AVideo/security/advisories/GHSA-v467-g7g7-hhfh (Exploit, Mitigation, Vendor Advisory)
- github.com/WWBN/AVideo/issues/10403
- github.com/WWBN/AVideo/commit/df926e500580c2a1e3c70351f0c30f4e15c0fd83 (Patch)
Frequently asked questions
- What is CVE-2026-33237?
- CVE-2026-33237 is a medium-severity vulnerability in Wwbn Avideo, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.5/10. Published 2026-03-21.
- How severe is CVE-2026-33237?
- Medium severity. CVSS v3 base score is 5.5 out of 10.