CVE-2026-25527
PYSEC-2026-2124 · CVE-2026-25527 · GHSA-9jj8-v89v-xjvw
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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.
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