CVE-2026-25527

changedetection.io is a free open source web page change detection tool. In versions prior to 0.53.2, the `/static/<group>/<filename>` route accepts `group=".."`, which causes `send_from_directory("static/..", filename)` to execute. This moves the base directory up to `/app/changedetectionio`, enabling unauthenticated local file read of application source files (e.g., `flask_app.py`). Version 0.53.2 fixes the issue.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/dgtlmoon/changedetection.io/commit/9d38b4517364831889b5b0d7b3465fd060403fd4	Patch
https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-9jj8-v89v-xjvw	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-02-19 15:16

Updated : 2026-02-19 19:54

NVD link : CVE-2026-25527

Mitre link : CVE-2026-25527

CVE.ORG link : CVE-2026-25527

JSON object : View

Products Affected

webtechnologies

changedetection

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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