CVE-2026-89246 WWBN AVideo CSV Formula Injection via myComments.download.php
Authenticated users can inject malicious formulas into exported CSV files, leading to code execution when administrators open the file.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-89246?
CVE-2026-89246 is a medium-severity vulnerability in WWBN AVideo, published on 11 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
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.
Weakness: CWE-1236
Which versions are affected by CVE-2026-89246?
How do I fix CVE-2026-89246?
No fix has been published for CVE-2026-89246 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-89246 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-89246 exists.
Sources
Also known as GHSA-2w9g-fhjg-9xh3, GHSA-766f-9gfh-v4wj.