usystemsgmbh Webling Plugin up to 3.9.0 on WordPress webling_admin_save_form cross site scripting

Summaryinfo

A vulnerability identified as problematic has been detected in usystemsgmbh Webling Plugin up to 3.9.0 on WordPress. The impacted element is the function webling_admin_save_form. Performing a manipulation results in cross site scripting. This vulnerability is known as CVE-2026-1263. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in usystemsgmbh Webling Plugin up to 3.9.0 on WordPress. This affects the function webling_admin_save_form. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. The summary by CVE is:

The Webling plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 3.9.0 due to insufficient input sanitization, insufficient output escaping, and missing capabilities checks in the 'webling_admin_save_form' and 'webling_admin_save_memberlist' functions. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject Webling forms and memberlists with arbitrary web scripts that will execute whenever an administrator views the related form or memberlist area of the WordPress admin.

The weakness was published by Kate Kligman. It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2026-1263 since 01/20/2026. The exploitability is told to be easy. It is possible to initiate the attack 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.

Upgrading to version 3.9.0 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• usystemsgmbh

Name

• Webling Plugin

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9.0

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CPE 2.2info

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