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.
History

Thu, 19 Feb 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Webtechnologies
Webtechnologies changedetection
CPEs cpe:2.3:a:webtechnologies:changedetection:*:*:*:*:*:*:*:*
Vendors & Products Webtechnologies
Webtechnologies changedetection

Thu, 19 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 19 Feb 2026 14:45:00 +0000

Type Values Removed Values Added
Description 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.
Title changedetection.io vulnerable to unauthenticated static path traversal
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-02-19T14:18:18.933Z

Updated: 2026-02-19T15:35:41.155Z

Reserved: 2026-02-02T19:59:47.373Z

Link: CVE-2026-25527

cve-icon Vulnrichment

Updated: 2026-02-19T15:35:25.712Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-19T15:16:11.947

Modified: 2026-02-19T19:54:04.670

Link: CVE-2026-25527

cve-icon Redhat

No data.