Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
The Contest Gallery plugin for WordPress is vulnerable to an authentication bypass leading to admin account takeover in all versions up to, and including, 28.1.5. This is due to the email confirmation handler in `users-registry-check-after-email-or-pin-confirmation.php` using the user's email string in a `WHERE ID = %s` clause instead of the numeric user ID, combined with an unauthenticated key-based login endpoint in `ajax-functions-frontend.php`. When the non-default `RegMailOptional=1` setting is enabled, an attacker can register with a crafted email starting with the target user ID (e.g., `[email protected]`), trigger the confirmation flow to overwrite the admin's `user_activation_key` via MySQL integer coercion, and then use the `post_cg1l_login_user_by_key` AJAX action to authenticate as the admin without any credentials. This makes it possible for unauthenticated attackers to take over any WordPress administrator account and gain full site control.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
| Date | Total | Labels |
|---|
| 2026-03-24 | 2 | Disclosure2 |
| 2026-03-25 | 1 | Disclosure1 |
⚡ New CVE Alert: CVE-2026-4021 📊 Severity: 8.1 🚨 Risk Level: High 🧩 Affects: Mysql Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-4021 #CVE-2026-4021 #CVE #High #Mysql #CyberSecurity #InfoSec https://t.co/xdpGMvNGno
Post summary
The tweet announces the new MySQL vulnerability CVE‑2026‑4021 with a severity score of 8.1, but provides no further technical or exploit details.
CVE-2026-4021 The Contest Gallery plugin for WordPress is vulnerable to an authentication bypass leading to admin account takeover in all versions up to, and including, 28.1.5. This … https://www.cve.org/CVERecord?id=CVE-2026-4021
Post summary
The CVE announces an authentication bypass in the Contest Gallery WordPress plugin, allowing admin takeover across all versions up to 28.1.5, but provides no PoC, patch, or exploitation evidence.
🟠 CVE-2026-4021 - High The Contest Gallery plugin for WordPress is vulnerable to an authentication bypass leading to admin account takeover in all versions up to, and including, 28.1.5. This is due to the email conf... https://www.thehackerwire.com/vulnerability/CVE-2026-4021/ https://t.co/iRpPLnhyF6
Post summary
CVE-2026-4021 reveals an authentication bypass in the Contest Gallery WordPress plugin, enabling admin takeover in versions up to 28.1.5, but no PoC, exploit, or patch information is included.