Description
changedetection.io is a free open source web page change detection tool. In versions prior to 0.54.1, changedetection.io is vulnerable to Server-Side Request Forgery (SSRF) because the URL validation function `is_safe_valid_url()` does not validate the resolved IP address of watch URLs against private, loopback, or link-local address ranges. An authenticated user (or any user when no password is configured, which is the default) can add a watch for internal network URLs. The application fetches these URLs server-side, stores the response content, and makes it viewable through the web UI โ enabling full data exfiltration from internal services. Version 0.54.1 contains a fix for the issue.
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| changedetection | โ | 0.54.1 |
| changedetection-io | โ | 0.54.1 |
References
Similar Threats
- High CVE-2026-43891
- High CVE-2026-41895
- Critical CVE-2026-35490
- Medium CVE-2026-35000
- High CVE-2026-33981
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