Live Composer Plugin up to 2.1.19 on WordPress Shortcode dslc_custom_field cross site scripting

Summaryinfo

A vulnerability classified as problematic has been found in Live Composer Plugin up to 2.1.19. This vulnerability affects unknown code of the component Shortcode Handler. This manipulation of the argument dslc_custom_field causes cross site scripting. This vulnerability appears as CVE-2026-16787. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in Live Composer Plugin up to 2.1.19 and classified as problematic. Affected by this vulnerability is some unknown processing of the component Shortcode Handler. The manipulation of the argument dslc_custom_field with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

The Live Composer – Free WordPress Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'dslc_custom_field' Shortcode in all versions up to, and including, 2.1.19 due to insufficient input sanitization and output escaping. 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.

It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-16787 since 07/23/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Live Composer Plugin

Version

• 2.1.0
• 2.1.1
• 2.1.2
• 2.1.3
• 2.1.4
• 2.1.5
• 2.1.6
• 2.1.7
• 2.1.8
• 2.1.9
• 2.1.10
• 2.1.11
• 2.1.12
• 2.1.13
• 2.1.14
• 2.1.15
• 2.1.16
• 2.1.17
• 2.1.18
• 2.1.19

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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