GHSA-MW8M-398G-H89W changedetection.io Vulnerable to Reflected XSS in RSS Single Watch Error Response

Summary Three security vulnerabilities were identified in changedetection.io through source code review and live validation against a locally deployed Docker instance. All vulnerabilities were confirmed exploitable on the latest version 0.53.6 it was additionally validated at scale against 500...

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...

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...