Vulnerability · Published Sep 11, 2026 · Assigned by VulnCheck

CVE-2026-89246WWBN AVideo CSV Formula Injection via myComments.download.php

Medium 5.4

In plain English

A medium-severity security flaw in AVideo from WWBN. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.2%top 85.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
WWBN	AVideo	0 – through c3edcc274c389816d434acadac07ee78eaf330c1

Weakness: CWE-1236 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References

GitHub Security Advisory (GHSA-766f-9gfh-v4wj) vendor-advisory
VulnCheck Advisory: WWBN AVideo CSV Formula Injection via myComments.download.php third-party-advisory