---
id: CVE-2026-88866
title: >-
  WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a
  stored cross-site scripting vulnerability in the LoginControl plugin that
  fails to encode the User-Agent header before storing it in login history
summary: >-
  WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a
  stored cross-site scripting vulnerability in the LoginControl plugin that
  fails to encode the User-Agent header before storing it in login history.
  Attackers …
severity: high
cvss: 8.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'
cwe:
  - CWE-79
vendor: WWBN
product: AVideo
affected:
  - AVideo <= c3edcc274c389816d434acadac07ee78eaf330c1
published: '2026-09-10'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T15:17:25.413'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88866'
references:
  - url: 'https://github.com/WWBN/AVideo/security/advisories/GHSA-wg67-62q3-2m33'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/wwbn-avideo-logincontrol-stored-xss-via-user-agent-header
    label: disclosure@vulncheck.com
  - url: 'https://github.com/WWBN/AVideo/security/advisories/GHSA-wg67-62q3-2m33'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-15T14:19:04.571056Z'
epss: 0.00445
epssPercentile: 0.36047
ingestedAt: '2026-09-10T13:50:37.334Z'
---

## Overview

WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the LoginControl plugin that fails to encode the User-Agent header before storing it in login history. Attackers with any valid login account can inject malicious scripts in the User-Agent header that execute in administrator browsers when viewing the Login History page, allowing script execution within the administrator session.

## Remediation

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