CVE-2026-25527

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.

PUBLISHED Reserved 2026-02-02 | Published 2026-02-19 | Updated 2026-02-19 | Assigner GitHub_M

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

References

github.com/...ion.io/security/advisories/GHSA-9jj8-v89v-xjvw

github.com/...ommit/9d38b4517364831889b5b0d7b3465fd060403fd4

cve.org (CVE-2026-25527)

nvd.nist.gov (CVE-2026-25527)

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