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CVE-2026-32986— Textpattern CMS 4.9.0: Second-Order XSS via Atom Feed Injection

CVSS 6.1 · Medium EPSS 0.04% · P12
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I. Basic Information for CVE-2026-32986

Vulnerability Information
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Vulnerability Title
Textpattern CMS 4.9.0: Second-Order XSS via Atom Feed Injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
Textpattern CMS version 4.9.0 contains a second-order cross-site scripting vulnerability that allows attackers to inject malicious scripts by exploiting improper sanitization of user-supplied input in Atom feed XML elements. Attackers can embed unescaped payloads in parameters such as category that are reflected into Atom fields like and , which execute as JavaScript when feed readers or CMS aggregators consume the feed and insert content into the DOM using unsafe methods.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
Textpattern CMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Textpattern CMS是Textpattern团队的一个基于Php的内容管理系统。 Textpattern CMS 4.9.0版本存在安全漏洞，该漏洞源于Atom feed XML元素中用户输入清理不当，可能导致二阶跨站脚本攻击。
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

VendorProductAffected VersionsCPESubscribe
TextpatternTextpattern CMS 4.9.0 -

II. Public POCs for CVE-2026-32986

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III. Intelligence Information for CVE-2026-32986

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IV. Related Vulnerabilities

Same product: Textpattern CMS
Same vendor: Textpattern
Same weakness: CWE-79

V. Comments for CVE-2026-32986

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