CVE-2026-27645

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.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/dgtlmoon/changedetection.io/commit/a385c89abf44b52fcfa20c7c6a6dd3047c4c1eb5	Patch
https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-mw8m-398g-h89w	Exploit Vendor Advisory
https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-mw8m-398g-h89w	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:webtechnologies:changedetection:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-25 05:17

Updated : 2026-02-25 16:51

NVD link : CVE-2026-27645

Mitre link : CVE-2026-27645

CVE.ORG link : CVE-2026-27645

JSON object : View

Products Affected

webtechnologies

changedetection

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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