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CVE-2025-62780— changedetection.io vulnerable to stored XSS in Watch update via API

Quick assessment

Affected
dgtlmoon changedetection.io
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 0.50.34之前版本存在跨站脚本漏洞，该漏洞源于安全检查不足，可能导致存储型跨站脚本攻击。

CVSS 3.5 · Low EPSS 0.46% · P38

Public Exploits 1

Nuclei · 1 CVE-2025-62780.yaml [template]

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript
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I. Basic Information for CVE-2025-62780

Vulnerability Information
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Vulnerability Title
changedetection.io vulnerable to stored XSS in Watch update via API
Source: CVE Program / CVE List V5
Vulnerability Description
changedetection.io is a free open source web page change detection tool. A Stored Cross Site Scripting is present in changedetection.io Watch update API in versions prior to 0.50.34 due to insufficient security checks. Two scenarios are possible. In the first, an attacker can insert a new watch with an arbitrary URL which really points to a web page. Once the HTML content is retrieved, the attacker updates the URL with a JavaScript payload. In the second, an attacker substitutes the URL in an existing watch with a new URL that is in reality a JavaScript payload. When the user clicks on *Preview* and then on the malicious link, the JavaScript malicious code is executed. Version 0.50.34 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/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
changedetection.io 跨站脚本漏洞
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 0.50.34之前版本存在跨站脚本漏洞，该漏洞源于安全检查不足，可能导致存储型跨站脚本攻击。
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

Vendor Product Affected Versions CPE Subscribe
dgtlmoon changedetection.io < 0.50.34 -

II. Public POCs for CVE-2025-62780

# POC Description Source Link Shenlong Link
1 changedetection.io <= 0.50.34 contains a stored cross site scripting caused by insufficient security checks in the Watch update API, letting attackers execute arbitrary JavaScript when users preview malicious links, exploit requires user interaction https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-62780.yaml POC Details
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III. Intelligence Information for CVE-2025-62780

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Vendor Advisories for CVE-2025-62780 (1)

IV. Related Vulnerabilities

Same product: changedetection.io
Same vendor: dgtlmoon
Same weakness: CWE-79

V. Comments for CVE-2025-62780

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