Flynax BridgeWordPress extension · Flynax
CVE-2025-4179
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 · uneditedThe Flynax Bridge plugin for WordPress is vulnerable to limited Privilege Escalation due to a missing capability check on the registerUser() function in all versions up to, and including, 2.2.0. This makes it possible for unauthenticated attackers to register new user accounts as authors.
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 confidenceThe Flynax Bridge WordPress plugin has a missing capability check on the registerUser() function, allowing unauthenticated attackers to arbitrarily create user accounts with author-level privileges. This is a privilege escalation vulnerability where the function fails to verify the calling user's permissions before creating new accounts.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
Flynax BridgeWordPress extension
<= 2.2.0CVSS 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
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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 Flynax Bridge plugin is installedCheck the WordPress plugins directory for the flynax-bridge folder, or list active plugins via WP-CLI: wp plugin list --status=active --format=csvAffected if The plugin folder 'flynax-bridge' exists in wp-content/plugins/
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Identify the installed plugin versionRead the plugin header from the main PHP file (typically flynax-bridge.php) to extract the 'Version' field, or run: wp plugin get flynax-bridge --format=jsonAffected if The version listed is 2.2.0 or lower
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Check if user registration is enabled in WordPress settingsNavigate to WordPress Settings > General and verify if 'Anyone can register' is checked, or query via WP-CLI: get_option('users_can_register')Affected if users_can_register returns 1 (enabled)
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Inspect for suspicious new user accounts with author roleQuery user accounts with author-level capability: wp user list --role=author --format=table, or check wp_users and wp_usermeta tables for unexpectedly created accountsAffected if There are author-level users that were not created by legitimate administrators
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Verify the registerUser() function lacks capability checksExamine the plugin source code in flynax-bridge.php or related files for the registerUser() function - it should verify current_user_can() before creating usersAffected if The registerUser() function exists and contains no current_user_can() or similar capability check before user creation
A user is affected if Flynax Bridge plugin version 2.2.0 or lower is installed, WordPress user registration is enabled, and the registerUser() function lacks proper capability validation, allowing unauthenticated account creation.
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 dataApply the vendor patch (version 2.2.1 or higher) which adds proper capability checks to the registerUser() function. Until patched, consider disabling user registration or restricting access via firewall rules.
Fix this in Flynax Bridge
Scoped from the published advisory
- Consultation2.0 h
- Implementation2.0 h
- Testing3.0 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 $2,512.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-4179 — 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-2025-4179 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