CVE-2025-49903
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 · uneditedMissing Authorization vulnerability in bdthemes ZoloBlocks zoloblocks allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects ZoloBlocks: from n/a through <= 2.3.11.
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 · moderate confidenceMissing Authorization vulnerability in ZoloBlocks WordPress plugin allows unauthorized access to certain functionality or data due to incorrectly configured access control security levels. The plugin fails to properly enforce authorization checks, potentially allowing unauthenticated or lower-privileged users to access restricted features or information.
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
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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.
-
Verify ZoloBlocks plugin installation and versionIn WordPress admin, go to Plugins > Installed Plugins and locate ZoloBlocks. Note the version number. Alternatively, check the plugin file at wp-content/plugins/zoloblocks/zoloblocks.php for the Version header.Affected if ZoloBlocks plugin is installed and version is unknown or unpatched (no fixed version provided in CVE details)
-
Identify accessible AJAX endpointsCheck plugin PHP files in wp-content/plugins/zoloblocks/ for wp_ajax_ and wp_ajax_nopriv_ hooks. These are typically in main plugin file or includes/ajax.php. List all registered AJAX actions.Affected if Any AJAX action is registered with only wp_ajax_nopriv_ hook (accessible to unauthenticated users) without capability checks
-
Review AJAX callback authorizationOpen each AJAX callback function identified. Look for current_user_can() or check_admin_referer() calls at the start of the function. Check if nonce verification is performed.Affected if AJAX handlers lack current_user_can() capability checks or nonce validation before executing sensitive operations
-
Check REST API endpoint configurationSearch plugin files for register_rest_route() calls. Identify all custom REST API endpoints and their permission_callback functions.Affected if REST API endpoints exist with permission_callback set to null, returning true, or checking capabilities insufficiently
-
Test capability enforcement on admin actionsUsing a low-privilege user account (subscriber level), attempt to access suspected restricted plugin features via direct URL or AJAX calls. Compare results against expected access denial.Affected if Lower-privileged users can access or modify data that should require administrator-level capabilities
Environment is affected if ZoloBlocks plugin is installed and any of its AJAX endpoints, REST API routes, or admin actions are accessible without proper capability and authorization verification.
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 proper authorization checks, capability verification, and nonce validation across all AJAX handlers, REST API endpoints, and front-end functionality. Ensure all sensitive operations verify user permissions before execution.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-49903 — 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-2025-49903 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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