CVE-2026-27696
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 — enabling full data exfiltration from internal services. Version 0.54.1 contains a fix for the issue.
- Affected products
- Changedetection.Io
- Webtechnologies Changedetection
- < 0.54.1
- Fix
- Available
- CVSS 3.1
- 8.6 HIGH
- EPSS
- 0.4% (37th percentile)
- Weakness
- CWE-918
- NVD status
- Analyzed
- Published
- 2026-02-25
No indexed exploits for CVE-2026-27696 yet
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No exploit for CVE-2026-27696 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.