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I. Basic Information for CVE-2026-35490
Vulnerability Information

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Vulnerability Title
changedetection.io has an Authentication Bypass via Decorator Ordering
Source: NVD (National Vulnerability Database)
Vulnerability Description
changedetection.io is a free open source web page change detection tool. Prior to 0.54.8, the @login_optionally_required decorator is placed before (outer to) @blueprint.route() instead of after it. In Flask, @route() must be the outermost decorator because it registers the function it receives. When the order is reversed, @route() registers the original undecorated function, and the auth wrapper is never in the call chain. This silently disables authentication on these routes. This vulnerability is fixed in 0.54.8.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
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 0.54.8之前版本存在安全漏洞,该漏洞源于@login_optionally_required装饰器放置在@blueprint.route()之前(外部)而非之后,可能导致这些路由上的身份验证被静默禁用。
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 < 0.54.8 -
II. Public POCs for CVE-2026-35490
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III. Intelligence Information for CVE-2026-35490
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IV. Related Vulnerabilities
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