CVE-2025-23712
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 kapostintegrations Kapost kapost-byline allows Stored XSS.This issue affects Kapost: from n/a through <= 2.2.9.
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 confidenceA Cross-Site Request Forgery (CSRF) vulnerability in the kapost-byline plugin allows authenticated users to be tricked into submitting malicious requests that inject persistent JavaScript code (Stored XSS). When other users view content containing the injected byline, the malicious script executes in their browsers.
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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Verify kapost-byline plugin is installedCheck your CMS plugin directory or admin interface for the kapost-byline plugin. In WordPress, this would be in wp-content/plugins/ or the Plugins admin page.Affected if The plugin is present and active in the CMS installation
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Identify installed plugin versionLocate the plugin header in the main plugin file (typically includes 'Version:' comment) or check the plugin admin metadata.Affected if The installed version is any version prior to the vendor patch - compare against release notes if available since no specific affected version range was provided
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Confirm byline submission functionality is accessibleLocate the plugin admin pages, settings, or content editing interfaces where bylines can be created or modified. Check if there are form endpoints or AJAX actions for saving byline data.Affected if The plugin exposes functionality to create/edit bylines that can accept custom content
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Inspect form submissions for CSRF protection absenceExamine the plugin PHP source code for form handlers and AJAX callbacks. Search for nonce verification functions (like wp_verify_nonce, check_ajax_referer, or equivalent). Review all POST/GET handlers that modify byline data.Affected if Form submissions and AJAX actions that save byline content lack nonce validation - the code processes state-changing requests without verifying request origin
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Check for stored XSS in byline content handlingExamine how byline content is saved and rendered. Look for whether user-supplied byline content is sanitized before storage and properly escaped when displayed to other users.Affected if Byline content is stored without sanitization and rendered without proper output escaping, allowing injected script to persist and execute when other users view the content
Your environment is affected if the kapost-byline plugin is active, has byline editing functionality, and the code lacks nonce verification on form/AJAX handlers that save byline data, allowing authenticated users to inject persistent JavaScript that executes for other users viewing that content.
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 anti-CSRF nonce verification on all form submissions and AJAX actions within the plugin, and ensure the nonce is validated server-side before processing any state-changing requests.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-23712 — 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-2025-23712 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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