CVE-2025-23776 Overview
CVE-2025-23776 is a missing authorization vulnerability in the Cache Sniper for Nginx WordPress plugin (snipe-nginx-cache) developed by ekaterir. The flaw affects all plugin versions up to and including 1.0.4.2. Authenticated attackers with low privileges can exploit incorrectly configured access control checks to invoke plugin functionality that should be restricted to administrators. The vulnerability is classified under [CWE-862] Missing Authorization. It requires network access and low-privileged authentication but no user interaction, and can affect integrity of cache-related settings on impacted WordPress sites.
Critical Impact
Authenticated users with minimal privileges can access restricted plugin functionality due to broken access control in the Nginx cache management plugin.
Affected Products
- Cache Sniper for Nginx (snipe-nginx-cache) WordPress plugin — all versions through 1.0.4.2
- WordPress sites running the ekaterir Cache Sniper for Nginx plugin
- Nginx-fronted WordPress deployments relying on this plugin for cache purging
Discovery Timeline
- 2025-01-16 - CVE-2025-23776 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-23776
Vulnerability Analysis
The vulnerability stems from missing authorization checks in the Cache Sniper for Nginx plugin. The plugin exposes functionality intended for administrative use, but fails to verify that the requesting user holds the required capability before executing sensitive actions. Any authenticated user, including low-privileged roles such as subscriber or contributor, can invoke these actions by issuing standard HTTP requests to the plugin's endpoints.
The impact is limited to integrity: attackers cannot directly read sensitive data or crash the site through this issue, but they can trigger administrative plugin behavior such as cache manipulation. This can lead to stale or inconsistent content delivery and interfere with expected cache lifecycles on the Nginx front end.
Root Cause
The root cause is [CWE-862] Missing Authorization. The plugin registers action handlers that do not call WordPress capability checks such as current_user_can() or validate role-based access before executing privileged operations. Nonce validation, if present, only confirms request origin — it does not enforce authorization boundaries between user roles.
Attack Vector
Exploitation requires an authenticated WordPress account on the target site. The attacker sends a crafted HTTP request to the plugin's exposed action, and the plugin executes the action without verifying the caller's role. No user interaction from an administrator is required. See the Patchstack Vulnerability Report for advisory details.
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Stop Identity AttacksDetection Methods for CVE-2025-23776
Indicators of Compromise
- Unexpected cache purge or cache configuration change events on Nginx-fronted WordPress sites running snipe-nginx-cache.
- HTTP POST or GET requests to plugin action endpoints originating from non-administrator user sessions.
- Cache inconsistency, stale content delivery, or repeated origin fetches without corresponding administrative activity.
Detection Strategies
- Review WordPress access logs for requests to plugin endpoints correlated with low-privileged user cookies or authentication tokens.
- Audit installed plugin versions against 1.0.4.2 and earlier to identify vulnerable instances across the estate.
- Alert on plugin action invocations attributed to accounts that do not hold manage_options or equivalent capability.
Monitoring Recommendations
- Enable WordPress security plugin logging for administrative actions and role-based access anomalies.
- Forward web server access logs to a centralized log platform and query for plugin endpoint requests grouped by authenticated user role.
- Monitor Nginx cache purge frequency and correlate spikes with WordPress user activity to detect abuse.
How to Mitigate CVE-2025-23776
Immediate Actions Required
- Inventory all WordPress sites and identify installations of Cache Sniper for Nginx (snipe-nginx-cache) at version 1.0.4.2 or earlier.
- Deactivate the plugin on affected sites until a patched version is confirmed available and deployed.
- Review WordPress user accounts and enforce least privilege, removing unnecessary subscriber and contributor accounts.
Patch Information
At the time of NVD publication, no fixed version beyond 1.0.4.2 is referenced in the advisory. Consult the Patchstack Vulnerability Report for updated remediation guidance and any subsequent plugin releases.
Workarounds
- Deactivate and remove the Cache Sniper for Nginx plugin until a patched release is confirmed.
- Restrict WordPress registration and lock down role assignments to prevent low-privileged account creation.
- Place plugin action endpoints behind a web application firewall (WAF) rule that validates authenticated role context before forwarding requests.
# Configuration example: disable the vulnerable plugin via WP-CLI
wp plugin deactivate snipe-nginx-cache
wp plugin delete snipe-nginx-cache
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
