Is CVE-2026-33237 actively exploited?

No active exploitation of CVE-2026-33237 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33237 be exploited remotely?

Yes. CVE-2026-33237 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33237?

CVE-2026-33237 has a CVSS score of 5.5 (MEDIUM).

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MEDIUM

CVE-2026-33237

CWE-918Published: March 21, 2026· Updated: Mar 23, 2026

5.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.0th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-33237 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.5.