CVE-2026-16586 SQL injection in Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe
Authenticated attackers with author-level access can exploit a second-order SQL injection vulnerability to extract sensitive database information.
- 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-2026-16586?
CVE-2026-16586 is a medium-severity SQL injection vulnerability in contest-gallery Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe, published on 15 Aug 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 Second-Order SQL Injection via MultipleFiles Second-Order Payload via 'cg_multiple_files_for_post' -> 'cgRealId' in all versions up to, and including, 30.0.7 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with author-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Weakness: CWE-89
Which versions are affected by CVE-2026-16586?
How do I fix CVE-2026-16586?
No fix has been published for CVE-2026-16586 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-16586 being exploited?
There is no known exploitation of CVE-2026-16586 in the wild and no public exploit code.
Sources
Also known as GHSA-c955-3f9v-xpgv.