ShapedPlugin Easy Accordion Plugin up to 3.1.8 on WordPress Accordion Header Renderer accordion_header_renderer accordionTitleTag cross site scripting

Summaryinfo

A vulnerability labeled as problematic has been found in ShapedPlugin Easy Accordion Plugin up to 3.1.8. This issue affects the function accordion_header_renderer of the component Accordion Header Renderer. The manipulation of the argument accordionTitleTag results in cross site scripting. This vulnerability was named CVE-2026-18988. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, was found in ShapedPlugin Easy Accordion Plugin up to 3.1.8. Affected is the function accordion_header_renderer of the component Accordion Header Renderer. The manipulation of the argument accordionTitleTag 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. CVE summarizes:

The Easy Accordion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'accordionTitleTag' block attribute in versions up to, and including, 3.1.8. This is due to insufficient input sanitization and output escaping in the accordion_header_renderer() function, which emits the attacker-supplied tag name using esc_attr() in an HTML tag-name context instead of tag_escape(). 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.

The advisory is available at wordfence.com. This vulnerability is traded as CVE-2026-18988 since 08/05/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-54727). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• ShapedPlugin

Name

• Easy Accordion Plugin

Version

• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.1.7
• 3.1.8

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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