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I. Basic Information for CVE-2026-27645
Vulnerability Information
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Vulnerability Title
changedetection.io Vulnerable to Reflected XSS in RSS Single Watch Error Response
Source: NVD (National Vulnerability Database)
Vulnerability Description
changedetection.io is a free open source web page change detection tool. In versions prior to 0.54.1, the RSS single-watch endpoint reflects the UUID path parameter directly in the HTTP response body without HTML escaping. Since Flask returns text/html by default for plain string responses, the browser parses and executes injected JavaScript. Version 0.54.1 contains a fix for the issue.
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
changedetection.io 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
changedetection.io是dgtlmoon个人开发者的一个网站变更检测、监控和通知应用程序。 changedetection.io 0.54.1之前版本存在安全漏洞，该漏洞源于RSS单监视端点未对UUID路径参数进行HTML转义，可能导致反射型跨站脚本攻击。
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
dgtlmoonchangedetection.io < 0.54.1 -
II. Public POCs for CVE-2026-27645
#POC DescriptionSource LinkShenlong Link
1changedetection.io < 0.54.1 contains a stored XSS caused by unescaped reflection of UUID path parameter in RSS single-watch endpoint, letting remote attackers execute JavaScript in victim's browser, exploit requires victim to visit crafted URL. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-27645.yamlPOC Details
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III. Intelligence Information for CVE-2026-27645
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IV. Related Vulnerabilities
Same product: changedetection.io
Same vendor: dgtlmoon
Same weakness: CWE-79
V. Comments for CVE-2026-27645

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