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OpenAdvisories
Medium · 6.1 CVE-2026-29038 EUVD-2026-10011GHSA-8whx-v8qq-pq64PYSEC-2026-2127

changedetection.io: Reflected XSS in RSS Tag Error Response

Published Mar 6, 2026 · Updated Mar 9, 2026 · Assigned by GitHub_M

Description

changedetection.io is a free open source web page change detection tool. Prior to version 0.54.4, there is a reflected cross-site scripting (XSS) vulnerability identified in the /rss/tag/ endpoint of changedetection.io. The tag_uuid path parameter is reflected 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. This issue has been patched in version 0.54.4.

Affected products

VendorProductAffectedFixed
dgtlmoon changedetection.io < 0.54.4 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI changedetection-io < 0.54.4 0.54.4 GHSA-8whx-v8qq-pq64

References