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

CVE-2026-12732

MEDIUM · 6.4 CVSS v3.1 Published 2026-07-01
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
70/100
Remediation priority · Elevated
Remotely reachable Zero-click 7 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 LearnPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class_wrapper_form' shortcode attribute in versions up to, and including, 4.4.0. This is due to insufficient input sanitization and output escaping in the FilterCourseTemplate::sections() method at line 98, where the attacker-controlled attribute is inserted into an HTML class attribute via sprintf('<form class="%s">', $class_wrapper_form) without esc_attr() escaping. The FilterCourseShortcode::render() handler does not apply shortcode_atts() filtering, so raw user attributes flow directly through do_action('learn-press/filter-courses/layout', $data) into the template. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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 LearnPress WordPress plugin fails to sanitize the 'class_wrapper_form' shortcode attribute before using it in an HTML class attribute. The FilterCourseTemplate::sections() method at line 98 uses sprintf('<form class="%s">', $class_wrapper_form) without esc_attr() escaping, allowing authenticated contributors and above to inject arbitrary JavaScript via the shortcode.

MitigationApply esc_attr() to the class_wrapper_form variable before embedding it in the HTML class attribute, and ensure FilterCourseShortcode::render() uses shortcode_atts() to filter raw user input. Update to version 4.4.1 or later when available.

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
Low
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 checks

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

  1. Confirm LearnPress plugin is installed
    In WordPress admin, navigate to Plugins > Installed Plugins and locate LearnPress. Note the version number displayed.
    Affected if LearnPress is installed and active with a version prior to the patched release.
  2. Identify usage of the FilterCourseTemplate shortcode
    Search your WordPress posts, pages, and custom post types for the presence of the [learn_press_filter_course] shortcode, specifically checking for the class_wrapper_form attribute.
    Affected if The shortcode is present with a custom class_wrapper_form value and the plugin version is unpatched.
  3. Inspect the FilterCourseTemplate::sections() method
    Locate the file containing FilterCourseTemplate class, typically in includes/class-filter-course.php or similar path. Navigate to the sections() method around line 98 and verify if sprintf() or printf uses the class_wrapper_form variable without esc_attr() wrapping.
    Affected if The code shows sprintf('<form class="%s">', $class_wrapper_form) without esc_attr() applied to $class_wrapper_form.
  4. Check for shortcode_atts() filtering in render method
    Locate the FilterCourseShortcode class and its render() method. Verify whether shortcode_atts() is called to filter raw user input for the class_wrapper_form attribute.
    Affected if shortcode_atts() is not used or does not sanitize the class_wrapper_form parameter before passing it to the template.
  5. Assess user role exposure
    Review WordPress user roles and capabilities on your site. Determine if any users exist with Contributor-level access or higher who can create or edit content containing shortcodes.
    Affected if Authenticated users with Contributor role or above can create or edit content on the site.

You are affected if LearnPress is installed with an unpatched version and the FilterCourseTemplate shortcode with a custom class_wrapper_form attribute is in use, allowing any contributor-level user to inject malicious script.

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

Apply esc_attr() to the class_wrapper_form variable before embedding it in the HTML class attribute, and ensure FilterCourseShortcode::render() uses shortcode_atts() to filter raw user input. Update to version 4.4.1 or later when available.

Recommended fix Moderate confidence

LearnPress version 4.4.1 or later

  1. Navigate to the WordPress admin dashboard
  2. Go to Plugins > Installed Plugins
  3. Locate the LearnPress plugin
  4. Check the current version number
  5. Upgrade to the latest available version of LearnPress (version 4.4.1 or higher)
  6. Verify the upgrade was successful

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
  • Testing1.0 h
  • Review / QA1.0 h
4.0 hours of engineering $750
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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-2026-12732 in production — separate from our analysis above.

No notes yet

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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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