---
id: CVE-2026-91966
title: >-
  AVideo through 29.0 contains an unauthenticated server-side request forgery
  vulnerability in the check_site_availability function that accepts
  attacker-controlled HTTP Host headers
summary: >-
  AVideo through 29.0 contains an unauthenticated server-side request forgery
  vulnerability in the check_site_availability function that accepts
  attacker-controlled HTTP Host headers. Attackers can send requests to
  submitIndex.php or ajax.…
severity: medium
cvss: 5.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N'
cwe:
  - CWE-918
vendor: WWBN
product: AVideo
affected:
  - AVideo <= 29.0
published: '2026-09-15'
updated: '2026-09-20'
sourceUpdated: '2026-09-20T01:16:34.360'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91966'
references:
  - url: 'https://github.com/WWBN/AVideo/security/advisories/GHSA-rqg6-qcjv-55w5'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/avideo-through-29.0-unauthenticated-ssrf-via-host-header
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-20T00:29:28.477819Z'
epss: 0.00383
epssPercentile: 0.32231
ingestedAt: '2026-09-15T15:39:12.915Z'
---

## Overview

AVideo through 29.0 contains an unauthenticated server-side request forgery vulnerability in the check_site_availability function that accepts attacker-controlled HTTP Host headers. Attackers can send requests to submitIndex.php or ajax.php with arbitrary Host headers to probe internal network hosts and ports, following redirects without authentication.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.