CVE-2025-66113
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 ThemeAtelier Better Chat Support for Messenger better-chat-support allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Better Chat Support for Messenger: from n/a through <= 1.2.18.
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 confidenceThis is a missing authorization vulnerability in the WordPress plugin 'Better Chat Support for Messenger'. The plugin fails to properly enforce access control checks, allowing attackers to exploit incorrectly configured security levels. This likely enables unauthorized users to access administrative or privileged functionality they should not have access to.
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.
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Identify if the plugin is installedCheck the WordPress plugins directory (wp-content/plugins/) for a folder named 'better-chat-support-for-messenger', 'better-chat-support', or similar variants containing 'chat' and 'messenger' in the name.Affected if The plugin folder exists in the plugins directory.
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Verify the installed plugin versionOpen the main plugin PHP file (usually named similarly to the folder) and locate the 'Version' header in the plugin comment block at the top. Alternatively, check wp-admin > Plugins > Installed Plugins and look for 'Better Chat Support for Messenger'.Affected if The displayed version is lower than the patched version (compare against the latest version available at wordpress.org/plugins/better-chat-support-for-messenger).
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Confirm the plugin is activeIn WordPress admin, go to Plugins > Installed Plugins and check if 'Better Chat Support for Messenger' shows as 'Active'. Alternatively, query the wp_options table for the option_name 'active_plugins' and check if the plugin is listed.Affected if The plugin is activated on the site.
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Inspect user role configurationGo to WordPress admin > Users > Roles (or use a role editor plugin) and examine what capabilities are assigned to subscriber, contributor, and other low-privileged roles. Check if any chat-related capabilities (e.g., 'manage_chat', 'chat_admin') are improperly assigned to roles that should not have them.Affected if Non-administrator roles have administrative-level chat capabilities enabled.
A user is affected if they have the vulnerable version of Better Chat Support for Messenger installed, the plugin is active, and either the plugin lacks proper capability checks or user roles are misconfigured to grant elevated access.
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 the plugin to the latest patched version once available. Until then, restrict access to the affected plugin functionality using web application firewall rules and ensure WordPress user roles are properly configured.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-66113 — 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-2025-66113 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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