CVE-2026-27645
changedetection.io is a free open source web page change detection tool. In versions prior to 0.54.1, the RSS single-watch endpoint reflects the UUID path parameter directly in the HTTP response body without HTML escaping. Since Flask returns text/html by default for plain string responses, the browser parses and executes injected JavaScript. Version 0.54.1 contains a fix for the issue.
- Affected products
- Changedetection.Io
- Webtechnologies Changedetection
- < 0.54.1
- Fix
- Available
- CVSS 3.1
- 6.1 MEDIUM
- EPSS
- 0.4% (37th percentile)
- Weakness
- CWE-79
- NVD status
- Analyzed
- Published
- 2026-02-25
CVE-2026-27645 at NVD
No indexed exploits for CVE-2026-27645 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-27645 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.