High 8.6Published Feb 24, 2026

CVE-2026-27696changedetection.io Vulnerable to Server-Side Request Forgery (SSRF) via Watch URLs

Updated under an hour ago (Oct 27, 2026, 5:10 AM ET)

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It affects dgtlmoon changedetection.io and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for dgtlmoon changedetection.io

Exploited in the last 30 days

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.

CVSS: 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Feb 25, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

dgtlmoon changedetection.io dgtlmoon:changedetection.io (from the name)	before 0.54.1	CNA record
webtechnologies changedetection webtechnologies:changedetection	before 0.54.1	NVD

References

References

https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-3c45-4pj5-ch7m	x-refsource-confirm, exploit, mitigation, vendor-advisory
https://github.com/dgtlmoon/changedetection.io/commit/fe7aa38c651d73fe5f41ce09855fa8f97193747b	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.