Medium 5.3Published Feb 19, 2026

CVE-2026-25527changedetection.io is a free open source web page change detection tool.

Updated under an hour ago (2026-10-19 06:20 UTC)

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It affects webtechnologies changedetection. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for webtechnologies changedetection

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

webtechnologies changedetection webtechnologies:changedetection	before 0.53.2	NVD

References

https://github.com/dgtlmoon/changedetection.io/commit/9d38b4517364831889b5b0d7b3465fd060403fd4patch
https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-9jj8-v89v-xjvwexploit, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.