Listen to this Post
How the CVE Works
The Support Board plugin for WordPress (up to v3.8.0) uses a hardcoded encryption key in the `sb_encryption()` function, allowing attackers to bypass authentication. The `sb_ajax_execute()` function processes AJAX requests without proper authorization checks. By reverse-engineering the hardcoded secret, an unauthenticated attacker can craft malicious requests to execute arbitrary plugin actions, including data manipulation, deletion, or exploitation of other vulnerabilities like CVE-2025-4828.
DailyCVE Form
Platform: WordPress
Version: ≤ 3.8.0
Vulnerability: Auth Bypass
Severity: Critical
Date: 2025-07-08
Prediction: Patch by 2025-08-15
What Undercode Say
Check plugin version wp plugin get support-board --field=version Exploit PoC (simulated) curl -XPOST "https://[bash]/wp-admin/admin-ajax.php" --data "action=sb_ajax_execute&encrypted_payload=[bash]"
How Exploit
- Craft encrypted payloads using hardcoded key.
- Send unauthenticated AJAX requests to
sb_ajax_execute. - Leverage other plugin functions (e.g., CVE-2025-4828).
Protection from this CVE
- Update to Support Board > 3.8.0.
- Replace hardcoded secrets with dynamic keys.
- Restrict AJAX endpoints to authenticated users.
Impact
- Unauthorized data access/modification.
- Privilege escalation.
- Chained exploits (e.g., RCE).
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
