CVE-2026-25527
changedetection.io is vulnerable to unauthenticated static path traversal
5.3
MEDIUM
CVSS 3.1
EPSS 0.92%
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.
How to fix CVE-2026-25527
To remediate CVE-2026-25527, upgrade the affected package to a fixed version below.
- —upgrade to 0.53.2 or later
Is CVE-2026-25527 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.53.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |