CVE-2026-16055 Contest Gallery < 30.0.7 - Unauthenticated Login-Protection and 2FA Bypass via post_cg_login
Attackers can bypass 2FA and brute-force protections to guess passwords and take over accounts, including administrators, in the Contest Gallery plugin.
- 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-2026-16055?
CVE-2026-16055 is a high-severity authentication bypass vulnerability in Unknown Contest Gallery, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Contest Gallery WordPress plugin before 30.0.7 does not route its front-end login through the standard WordPress authentication flow, issuing an authentication cookie directly after the password check, which bypasses installed brute-force-protection and two-factor-authentication Contest Gallery WordPress plugin before 30.0.7 and enables unlimited, unthrottled password guessing against any account (including administrators) up to full account takeover.
Weakness: CWE-287
Which versions are affected by CVE-2026-16055?
How do I fix CVE-2026-16055?
No fix has been published for CVE-2026-16055 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-16055 being exploited?
There is no known exploitation of CVE-2026-16055 in the wild and no public exploit code.
Sources
Also known as GHSA-p2hg-mp68-hg8x.