CVE-2026-78088 Contest Gallery <= 32.0.1 - Unauthenticated Arbitrary File Upload via 'baseUrlForFacebook' Parameter
Authenticated attackers can overwrite files via the baseUrlForFacebook parameter, potentially leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78088?
CVE-2026-78088 is a high-severity vulnerability in contest-gallery Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Overwrite in all versions up to, and including, 32.0.1 due to insufficient file path validation in the 'baseUrlForFacebook' parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite known files which may lead to remote code execution when certain preconditions are met.
Weakness: CWE-434
Which versions are affected by CVE-2026-78088?
How do I fix CVE-2026-78088?
No fix has been published for CVE-2026-78088 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-78088 being exploited?
There is no known exploitation of CVE-2026-78088 in the wild and no public exploit code.
Sources
Also known as GHSA-xjx7-xfj8-wrqm.