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CVE-2026-18988— Easy Accordion <= 3.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'accordionTitleTag' Block Attribute

Quick assessment

Affected
shapedplugin Easy Accordion – AI-Powered FAQ & Accordion Blocks, Product FAQ
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Easy Accordion是WordPress基金会的一款为网站添加手风琴式折叠内容的插件。 WordPress Easy Accordion 3.1.8及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，在accordion_header_renderer()函数中通过'accordionTitleTag'块属性使用esc_attr()而不是tag_escape()输出攻击者提供的标签名称，可能导致具有贡献者级别及以上权限的认证攻击者向页面注入任意Web脚本。

CVSS 6.4 · Medium EPSS 0.35% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
shapedplugin Easy Accordion – AI-Powered FAQ & Accordion Blocks, Product FAQ ≤ 3.1.8 affected
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I. Basic Information for CVE-2026-18988

Vulnerability Information
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Vulnerability Title
Easy Accordion <= 3.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'accordionTitleTag' Block Attribute
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Easy Accordion 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Easy Accordion是WordPress基金会的一款为网站添加手风琴式折叠内容的插件。 WordPress Easy Accordion 3.1.8及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，在accordion_header_renderer()函数中通过'accordionTitleTag'块属性使用esc_attr()而不是tag_escape()输出攻击者提供的标签名称，可能导致具有贡献者级别及以上权限的认证攻击者向页面注入任意Web脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
shapedplugin Easy Accordion – AI-Powered FAQ & Accordion Blocks, Product FAQ 0 ~ 3.1.8 -

II. Public POCs for CVE-2026-18988

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III. Intelligence Information for CVE-2026-18988

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Patches & Fixes for CVE-2026-18988 (2)

Security Blog Posts for CVE-2026-18988 (1)

News Coverage for CVE-2026-18988 (1)

IV. Related Vulnerabilities

Same product: Easy Accordion – AI-Powered FAQ & Accordion Blocks, Product FAQ
Same vendor: shapedplugin
Same weakness: CWE-79

V. Comments for CVE-2026-18988

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