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CVE-2026-8351— RTMKit <= 2.0.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Advanced Heading Widget 'Background Text' Parameter

Quick assessment

Affected
rometheme RTMKit
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.

rometheme RTMKit是rometheme个人开发者的开发模板组件。 Rometheme RTMKit 2.0.7及之前版本存在跨站脚本漏洞，该漏洞源于render()函数对'background_text_heading'设置输出转义不足，直接将值连接到HTML属性中，容易受到存储型跨站脚本攻击，可能使经过身份验证的攻击者在页面中注入Web脚本。

CVSS 6.4 · Medium EPSS 0.41% · P33

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
rometheme RTMKit ≤ 2.0.7 affected
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I. Basic Information for CVE-2026-8351

Vulnerability Information
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Vulnerability Title
RTMKit <= 2.0.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Advanced Heading Widget 'Background Text' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The RTMKit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Advanced Heading widget's 'Background Text' parameter in versions up to, and including, 2.0.7 This is due to insufficient output escaping on the 'background_text_heading' setting in the render() function, which concatenates the value directly into an HTML attribute without applying esc_attr(). 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
Rometheme RTMKit 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
rometheme RTMKit是rometheme个人开发者的开发模板组件。 Rometheme RTMKit 2.0.7及之前版本存在跨站脚本漏洞，该漏洞源于render()函数对'background_text_heading'设置输出转义不足，直接将值连接到HTML属性中，容易受到存储型跨站脚本攻击，可能使经过身份验证的攻击者在页面中注入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
rometheme RTMKit 0 ~ 2.0.7 -

II. Public POCs for CVE-2026-8351

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III. Intelligence Information for CVE-2026-8351

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Patches & Fixes for CVE-2026-8351 (3)

IV. Related Vulnerabilities

Same product: RTMKit
Same vendor: rometheme
Same weakness: CWE-79

V. Comments for CVE-2026-8351

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