CVE-2026-27696: high-severity vulnerability in dgtlmoon changedetection.io
changedetection.io Vulnerable to Server-Side Request Forgery (SSRF) via Watch URLs
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 0.5%
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:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Affected products
dgtlmoon · changedetection.ioRelated CVEs — dgtlmoon changedetection.io
In the same product, most dangerous first.
CVE-2024-32651CRITICALServer Side Template Injection in Jinja2 allows Remote Command ExecutionEPSS 85.3%CVE-2024-51483MEDIUMchangedetection.io Path Traversal vulnerabilityEPSS 2.3%CVE-2024-34061MEDIUMReflected cross site scripting in changedetection.ioEPSS 1.3%CVE-2026-25527MEDIUMchangedetection.io vulnerable to unauthenticated static path traversalEPSS 1.0%CVE-2024-56509HIGHchangedetection.io has Improper Input Validation Leading to LFR/Path TraversalEPSS 0.7%CVE-2024-51998HIGHPath traversal using file URI scheme without supplying hostname in changedetection.ioEPSS 0.7%