External Control of File Name or Path Affecting changedetection.io package, versions [,0.55.1)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-CHANGEDETECTIONIO-16432019
- published6 May 2026
- disclosed5 May 2026
- creditLê Hoàng Minh
Introduced: 5 May 2026
CVE-2026-43891 (opens in a new tab)How to fix?
Upgrade changedetection.io to version 0.55.1 or higher.
Overview
changedetection.io is a Website change detection and monitoring service
Affected versions of this package are vulnerable to External Control of File Name or Path through the backup restoration. An attacker can access arbitrary local files by supplying a crafted backup archive containing a manipulated history.txt file that references sensitive file paths. This allows the attacker to retrieve the contents of files readable by the application process via the Preview UI or API endpoints.