CVE-2026-25527CWE-22

changedetection.io vulnerable to unauthenticated static path traversal

Medium · published February 19, 2026

CVSS v3.1
5.3
EPSS
1%
Percentile
62.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.01000 · 62.5th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-02-19T14:18Z
EPSS history
Timeline
  • 19 FEB 14:18Z
    changedetection.io vulnerable to unauthenticated static path traversal
    cvelistv5