CVE-2025-23511
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedCross-Site Request Forgery (CSRF) vulnerability in Stargazer WP-BlackCheck wp-blackcheck allows Stored XSS.This issue affects WP-BlackCheck: from n/a through <= 2.7.2.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceCross-Site Request Forgery (CSRF) vulnerability in the WP-BlackCheck WordPress plugin allows authenticated administrators to be tricked into unknowingly submitting requests that store malicious JavaScript payloads (Stored XSS). An attacker would craft a malicious link or form that, when clicked by a logged-in administrator, forces the browser to submit a request that stores the XSS payload in the plugin's data storage. When other users access the affected functionality, the stored script executes.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm WP-BlackCheck plugin is installedIn WordPress admin, go to Plugins > Installed Plugins and look for WP-BlackCheck, or check the /wp-content/plugins/ directory for the wp-blackcheck folderAffected if The plugin is not installed or not active - no CSRF/XSS risk exists
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Identify the installed version numberCheck the plugin header in wp-blackcheck.php for the 'Version' field, or look at the plugin details in the WordPress plugins admin pageAffected if You cannot determine the version - you must review the nonce and sanitization implementation to confirm vulnerability status
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Verify nonce implementation on plugin formsInspect the plugin's PHP source files for form submissions and AJAX actions. Search for 'wp_nonce_field', 'check_admin_referer', or 'wp_verify_nonce' calls within the plugin's admin PHP filesAffected if Forms or AJAX actions lack WordPress nonce verification - the CSRF vulnerability is present
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Check for input sanitization on stored dataReview the plugin's code that saves data to the database (insert/update operations). Look for functions like sanitize_text_field, esc_attr, or other sanitization functions before database storageAffected if Data stored by the plugin is not sanitized before saving - stored XSS is possible
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Verify output encoding when displaying plugin dataReview the plugin's code that outputs stored data to users (admin dashboard or frontend). Look for echo/print statements and verify they use functions like esc_html, esc_attr, or other encoding functionsAffected if Stored data is displayed without proper output encoding - the stored XSS will execute in victim browsers
You are affected if the WP-BlackCheck plugin is installed, lacks proper WordPress nonce verification on forms/AJAX actions, and does not sanitize/encode stored data before displaying it.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement WordPress nonces on all forms and AJAX actions to prevent CSRF, and apply proper input sanitization with output encoding when displaying plugin data to prevent the stored XSS.
- Consultation3.0 h
- Implementation5.0 h
- Testing2.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,456.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-23511 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-23511 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data