CVE-2026-25527

PoC —

CVSS 3.1

5.3 medium

EPSS

<1%p58

Published

Feb 19, 2026 (Feb 19, 2026)

Modified

Jun 17, 2026

Description

changedetection.io is a free open source web page change detection tool. In versions prior to 0.53.2, the `/static/ / ` 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.

Vendors: webtechnologies
Products: changedetection
Weakness: CWE-22
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.9%)

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