The Live Composer – Free WordPress Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'custom_id' shortcode attribute of the dslc_modules_section and dslc_modules_area shortcodes in versions up to, and including, 2.1.19. This is due to insufficient input sanitization and output escaping on the user-supplied attribute, which is concatenated into the HTML id="" attribute of the rendered <div> element in the dslc_modules_section_front() and dslc_modules_area_front() functions without esc_attr(). 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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
livecomposer Live Composer – Free WordPress Website Builder unaffected
Version Status Constraints
0 affected ≤ 2.1.19

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.13/includes/display-functions.php#L1882 cve-icon
https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.13/includes/display-functions.php#L1888 cve-icon
https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.13/includes/display-functions.php#L1922 cve-icon
https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.13/includes/display-functions.php#L2107 cve-icon
https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.13/includes/display-functions.php#L2113 cve-icon
https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.17/includes/display-functions.php#L1882 cve-icon
https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.17/includes/display-functions.php#L1888 cve-icon
https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.17/includes/display-functions.php#L1922 cve-icon
https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.17/includes/display-functions.php#L2107 cve-icon
https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.17/includes/display-functions.php#L2113 cve-icon
https://plugins.trac.wordpress.org/changeset?reponame=&old=3662813%40live-composer-page-builder&new=3662813%40live-composer-page-builder cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/9b9e0302-b981-4885-822f-063247bec4b2?source=cve cve-icon
History

Tue, 01 Sep 2026 04:45:00 +0000

Type Values Removed Values Added
Description The Live Composer – Free WordPress Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'custom_id' shortcode attribute of the dslc_modules_section and dslc_modules_area shortcodes in versions up to, and including, 2.1.19. This is due to insufficient input sanitization and output escaping on the user-supplied attribute, which is concatenated into the HTML id="" attribute of the rendered <div> element in the dslc_modules_section_front() and dslc_modules_area_front() functions without esc_attr(). 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.
Title Live Composer <= 2.1.19 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'custom_id' Shortcode Attribute
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-09-01T04:27:51.709Z

Reserved: 2026-06-24T14:06:30.279Z

Link: CVE-2026-13203

cve-icon Vulnrichment

No data.

cve-icon NVD

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cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses