CVE-2026-29039
Description
changedetection.io is a free open source web page change detection tool. Prior to version 0.54.4, the changedetection.io application allows users to specify XPath expressions as content filters via the include_filters field. These XPath expressions are processed using the elementpath library which implements XPath 3.0/3.1 specification. XPath 3.0 includes the unparsed-text() function which can read arbitrary files from the filesystem. The application does not validate or sanitize XPath expressions to block dangerous functions, allowing an attacker to read any file accessible to the application process. This issue has been patched in version 0.54.4.
How to fix
- webtechnologies changedetection0.54.4 or later
- changedetection-io0.54.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| webtechnologies changedetection | v < 0.54.4 | 0.54.4 |
| changedetection-ioPyPI | v < 0.54.4 | 0.54.4 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.