EventonWordPress extension · Myeventon
CVE-2025-3527
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 EventON Pro plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check in the 'assets/lib/settings/settings.js' file in all versions up to, and including, 4.9.6. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vulnerability was partially patched in version 4.9.6.
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 EventON Pro WordPress plugin lacks proper capability validation in its settings functionality, allowing authenticated users with basic Subscriber privileges to modify plugin settings and inject persistent malicious scripts (XSS) that execute when other users access affected pages.
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
EventonWordPress extension
<= 4.9.6CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/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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Verify EventON plugin is installedIn WordPress admin, go to Plugins > Installed Plugins and look for 'EventON' or 'Eventon' in the plugin list. Note the installed version number.
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Confirm the exact installed versionCheck the plugin header or version file: navigate to /wp-content/plugins/eventon/ folder and read the main plugin file (e.g., eventon.php) to find the 'Version:' value.
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Identify user role assignmentsIn WordPress admin, go to Users and review the list. Note any accounts assigned the 'Subscriber' role specifically.
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Check for unauthorized settings modificationsNavigate to EventON > Settings (or similar admin panel). Review any saved settings values, particularly fields that might accept custom input (e.g., custom CSS, header scripts, display labels). Look for unexpected JavaScript or HTML content.
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Audit plugin capability checksIf you have file access, inspect the plugin's AJAX handlers and form processing files in /wp-content/plugins/eventon/ for 'manage_options' or 'edit_posts' capability checks around settings-related functions.
A site is affected if it runs EventON version 4.9.6 or lower, has at least one Subscriber-level user account, and the plugin settings are accessible without elevated privileges.
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 EventON Pro when available; if the partial patch in 4.9.6 is insufficient, implement proper capability checks (e.g., current_user_can('manage_options')) on all settings-related AJAX handlers and form processing endpoints.
Fix this in Eventon
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-3527 — 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-2025-3527 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
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