Simple Post Listing Plugin up to 0.2 on WordPress Postlist Shortcode class_name cross site scripting

Summaryinfo

A vulnerability was found in Simple Post Listing Plugin up to 0.2 on WordPress. It has been declared as problematic. The impacted element is an unknown function of the component Postlist Shortcode Handler. Such manipulation of the argument class_name leads to cross site scripting. This vulnerability is documented as CVE-2025-12650. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Simple Post Listing Plugin up to 0.2 on WordPress. Affected by this issue is some unknown processing of the component Postlist Shortcode Handler. The manipulation of the argument class_name with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. CVE summarizes:

The Simple post listing plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class_name' parameter in the postlist shortcode in all versions up to, and including, 0.2. This is due to insufficient input sanitization and output escaping on user-supplied attributes. 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 via mouse interaction.

The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2025-12650. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

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

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Productinfo

Type

• WordPress Plugin

Name

• Simple Post Listing Plugin

Version

• 0.1
• 0.2

CPE 2.3info

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• 🔒

CPE 2.2info

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• 🔒

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