CVSS 3.1
6.1 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCVE-2026-27645
Medium (6.1) in webtechnologies changedetection. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in changedetection-io 0.53.7, 0.54.1.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- webtechnologies:changedetection
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-mw8m-398g-h89w | PyPI | changedetection-io | <0.53.7 | 0.53.7 |
| PYSEC-2026-2125 | PyPI | changedetection-io | <0.54.1 | 0.54.1 |