---
id: CVE-2026-89246
title: WWBN AVideo CSV Formula Injection via myComments.download.php
summary: >-
  WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a
  CSV formula injection vulnerability in the myComments.download.php endpoint
  that fails to sanitize spreadsheet formula prefixes in comment text.
  Authenticated…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-1236
vendor: WWBN
product: AVideo
affected:
  - AVideo <= c3edcc274c389816d434acadac07ee78eaf330c1
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-11T18:20:31.818380Z'
exploitAvailable: true
published: '2026-09-11'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T18:20:45.261Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-89246'
references:
  - url: 'https://github.com/WWBN/AVideo/security/advisories/GHSA-766f-9gfh-v4wj'
    label: GitHub Security Advisory (GHSA-766f-9gfh-v4wj)
  - url: >-
      https://www.vulncheck.com/advisories/wwbn-avideo-csv-formula-injection-via-mycomments-download-php
    label: >-
      VulnCheck Advisory: WWBN AVideo CSV Formula Injection via
      myComments.download.php
tags:
  - cve.org
  - exploit-available
epss: 0.00235
epssPercentile: 0.12807
ingestedAt: '2026-09-14T00:35:28.535Z'
---

## Overview

WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a CSV formula injection vulnerability in the myComments.download.php endpoint that fails to sanitize spreadsheet formula prefixes in comment text. Authenticated users can inject formulas starting with =, +, -, or @ characters that execute when administrators or video owners open the exported CSV file in spreadsheet applications.

## Affected

- `AVideo <= c3edcc274c389816d434acadac07ee78eaf330c1`

## Remediation

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