CVE-2025-39430
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 Alexander Rauscha mLanguage mlanguage allows Stored XSS.This issue affects mLanguage: from n/a through <= 1.6.1.
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 confidenceCross-Site Request Forgery (CSRF) vulnerability in the mLanguage WordPress plugin (versions <= 1.6.1) allows authenticated attackers to trick administrators into submitting malicious requests that result in Stored XSS. The lack of proper CSRF token validation on state-changing operations enables attackers to inject persistent malicious scripts through plugin settings or content areas.
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 mLanguage plugin is installedCheck if the mLanguage plugin directory exists in your WordPress installation at wp-content/plugins/mlanguage/ or look for it in the WordPress admin under Plugins > Installed PluginsAffected if mLanguage plugin directory exists in wp-content/plugins/
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Check installed version of mLanguage pluginOpen the main plugin file (mlanguage.php) in wp-content/plugins/mlanguage/ and locate the Version field in the plugin header comment block, or view the version in the WordPress admin plugins listAffected if Version number displayed is 1.6.1 or lower
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Confirm plugin is active on the siteCheck the WordPress admin dashboard under Plugins to see if mLanguage is activated, or query the wp_options table for the active_plugins option and verify it contains mlanguageAffected if Plugin shows as Active in WordPress admin or active_plugins option contains mlanguage
Your environment is affected if the mLanguage plugin is installed, active, and running version 1.6.1 or lower, as this enables CSRF-based attacks leading to stored XSS.
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.
dbcve · scopedImplement WordPress nonces and CSRF token validation on all form submissions and AJAX actions within the plugin. Additionally, apply proper input sanitization and output escaping to prevent stored XSS execution. Update to a patched version once released.
mLanguage version > 1.6.1 (verify exact fixed version from WordPress plugin repository or vendor)
- 1. Check the WordPress plugin repository or vendor documentation for mLanguage to identify the fixed release version
- 2. If a version newer than 1.6.1 is available, upgrade the mLanguage plugin to that version through the WordPress admin dashboard or via wp-cli: wp plugin update mlanguage
- 3. After updating, verify the plugin is functioning correctly and test that multilingual functionality works as expected
- 4. Confirm the CSRF protection is now properly implemented by reviewing the plugin's nonce validation in forms and AJAX requests
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-39430 — 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-2025-39430 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
- No spam, self-promotion, credentials, or personal data