CVE-2025-31782
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 pupunzi mb.YTPlayer wpmbytplayer allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects mb.YTPlayer: from n/a through <= 3.3.8.
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 the mb.YTPlayer WordPress plugin (wpmbytplayer) allows attackers to exploit incorrectly configured access control security levels. This appears to be a classic WordPress privilege escalation issue where certain functions or AJAX endpoints lack proper capability checks, potentially allowing authenticated users with limited privileges to access administrative functionality intended for higher-privileged users.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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 mb.YTPlayer plugin installationCheck the WordPress plugins directory (/wp-content/plugins/) for the mb.YTPlayer folder, or query the wp_options table for the option_name 'active_plugins' to list currently active pluginsAffected if The mb.YTPlayer plugin folder exists in the plugins directory or appears in the active plugins list
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Determine installed versionLocate the main plugin file (typically mb.YTPlayer.php) within the plugin directory and read the version defined in the plugin header comment, or check the readme.txt file for the Stable tag entryAffected if The installed version is unknown, unpatched, or falls within any affected version range provided by the vendor advisory
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Identify plugin AJAX endpointsSearch the plugin source code for 'add_action' calls registering wp_ajax_ hooks (e.g., wp_ajax_mbytplayer_action), or use a web proxy to observe which AJAX actions the plugin exposes in the wp-admin/admin-ajax.php endpointAffected if The plugin exposes AJAX action handlers that handle sensitive operations
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Test for missing capability checksUsing a low-privileged user account (e.g., Subscriber), attempt to access the identified AJAX endpoints with action parameters matching the plugin handlers; verify responses using an HTTP proxy or by checking for successful execution rather than 403/401 errorsAffected if Requests from low-privileged users are processed without rejection or capability verification errors
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Verify nonce verificationExamine the plugin PHP code for current_user_can() calls and wp_verify_nonce() or check_admin_referer() functions within each AJAX handler before executing sensitive operationsAffected if AJAX handlers lack proper current_user_can() capability checks or nonce verification logic
If mb.YTPlayer is installed and its AJAX endpoints can be accessed by users with limited privileges without proper capability checks or nonce verification, the environment is affected by this authorization bypass vulnerability.
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 dataUpdate to the latest version of mb.YTPlayer if available; otherwise implement proper WordPress capability checks (current_user_can) and nonce verification on all sensitive plugin functions and AJAX endpoints.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-31782 — 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-2025-31782 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
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