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πŸ›‘οΈ Sentinel: [CRITICAL] Fix hardcoded secret bypass in Nginx xmlrpc config#79

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sentinel-xmlrpc-hardcoded-secret-fix-245334405305389580
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πŸ›‘οΈ Sentinel: [CRITICAL] Fix hardcoded secret bypass in Nginx xmlrpc config#79
Snider wants to merge 1 commit intodevfrom
sentinel-xmlrpc-hardcoded-secret-fix-245334405305389580

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@Snider Snider commented Apr 19, 2026

🚨 Severity: CRITICAL
πŸ’‘ Vulnerability: A hardcoded token (xrpc-9f8e7d6c5b4a) was found in the Nginx configuration (server-php/config/conf.d/wordpress.conf) allowing a bypass to the default block on xmlrpc.php access. Anyone who knows this token can access the endpoint.
🎯 Impact: Attackers who discover the hardcoded token can access the WordPress XML-RPC endpoint, which is frequently used for brute-force attacks and DDoS amplification.
πŸ”§ Fix: Removed the hardcoded secret check and unconditionally blocked the /xmlrpc.php endpoint using deny all;. Also added a journal entry in .jules/sentinel.md reflecting on this vulnerability pattern related to the lack of envsubst in the entrypoint script.
βœ… Verification: An isolated Nginx syntax check using a wrapper configuration confirms the syntax is valid. Code diff shows the bypass logic is completely removed.


PR created automatically by Jules for task 245334405305389580 started by @Snider

…onfig

This commit replaces a critical security vulnerability where a hardcoded token
(`xrpc-9f8e7d6c5b4a`) was used in `server-php/config/conf.d/wordpress.conf` to
bypass the default block on the `/xmlrpc.php` endpoint. Because the entrypoint
script lacks `envsubst` to dynamically set secrets, it was hardcoded, creating a
static credential vulnerability.

The endpoint is now unconditionally blocked using standard Nginx deny directives
(`deny all;`, `access_log off;`, `log_not_found off;`).

A journal entry has been added to `.jules/sentinel.md` documenting the finding
and prevention strategies.
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