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Cross-site Scripting (XSS)Weakness · CWE-79

CVE-2026-13609

HIGH · 8.8 CVSS v3.1 Published 2026-07-31
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges 3 weeks old

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 · unedited
The Frontend Admin by DynamiApps WordPress plugin before 3.29.9 decodes HTML entities in a submitted form field value after sanitizing it, which restores HTML tags that the sanitizer had neutralized. A double-encoded payload submitted by an unauthenticated visitor is therefore stored as a live tag and later output without escaping on the Frontend Admin by DynamiApps WordPress plugin before 3.29.9's front-end display surfaces, resulting in stored cross-site scripting that executes in the browser of any user, including an administrator, who views a page displaying the submitted value.

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 confidence

The Frontend Admin plugin sanitizes form submissions but then decodes HTML entities afterward, which restores and stores neutralized HTML tags as live executable elements. Double-encoded XSS payloads submitted by unauthenticated users are stored and later rendered without escaping on the frontend, executing in any visitor's or administrator's browser.

MitigationUpdate the Frontend Admin by DynamiApps plugin to version 3.29.9 or later to patch the desanitization vulnerability; alternatively, disable the plugin until the update can be applied.

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
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm plugin installation
    Check if the Frontend Admin (or Frontend Admin by DynamiApps) plugin is present in the WordPress installation under wp-content/plugins/ directory or via WordPress admin plugins list
    Affected if Plugin is installed and active
  2. Identify installed version
    Locate the plugin header in the main PHP file (e.g., frontend-admin.php) or check the readme.txt file for the Version field. In WordPress admin, go to Plugins > Installed Plugins and look for the version number next to Frontend Admin
    Affected if Version is below 3.29.9
  3. Verify vulnerable feature is in use
    Check if any Frontend Admin forms exist that accept user-submitted content (such as post submissions, custom inputs, or content fields that accept HTML). Review the plugin's form configuration in the WordPress admin dashboard under the Frontend Admin settings
    Affected if Forms accepting HTML or rich content input are configured and publicly accessible
  4. Inspect for stored XSS payloads
    Query the WordPress database (wp_posts table and any custom tables created by the plugin) for suspicious HTML patterns. Look for entries containing double-encoded sequences like <script or <script, or check the frontend page source for unescaped script tags in submitted content
    Affected if Double-encoded HTML entities or unescaped script tags are present in stored content

Users are affected if the Frontend Admin plugin version is below 3.29.9 and publicly accessible forms accepting HTML content are configured on the site.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update the Frontend Admin by DynamiApps plugin to version 3.29.9 or later to patch the desanitization vulnerability; alternatively, disable the plugin until the update can be applied.

Recommended fix High confidence

Frontend Admin by DynamiApps version 3.29.9 or later

  1. Log in to the WordPress admin dashboard
  2. Navigate to Plugins > Installed Plugins
  3. Locate 'Frontend Admin by DynamiApps' in the plugin list
  4. If an update is available, click 'Update Now' to update to version 3.29.9 or later
  5. Alternatively, download version 3.29.9 or later from the WordPress Plugin Repository and upload manually via Plugins > Add New > Upload Plugin
  6. After updating, verify the plugin version shows 3.29.9 or higher under Plugins > Installed Plugins

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-13609 in production — separate from our analysis above.

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What this is

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.

What belongs here
  • 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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