CVE-2026-33039 HIGH

CVE-2026-33039: AVideo vulnerable to unauthenticated SSRF via HTTP redirect bypass in LiveLinks proxy

Vendor Wwbn
Product AVideo
Weakness CWE-918 · SSRF
Published March 20, 2026
Last update March 20, 2026
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

WWBN AVideo is an open source video platform. In versions 25.0 and below, the plugin/LiveLinks/proxy.php endpoint validates user-supplied URLs against internal/private networks using isSSRFSafeURL(), but only checks the initial URL. When the initial URL responds with an HTTP redirect (Location header), the redirect target is fetched via fakeBrowser() without re-validation, allowing an attacker to reach internal services (cloud metadata, RFC1918 addresses) through an attacker-controlled redirect. This issue is fixed in version 26.0.

Key dates

02Disclosure timeline

March 20, 2026 CVE published
March 20, 2026 Record updated