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CVE-2026-92815 – Server-Side Request Forgery (SSRF) – changedetection.io ≤ 0.60.6

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Summary

CVE-2026-92815 is a server-side request forgery (SSRF) vulnerability in changedetection.io, an open-source website change monitoring tool, affecting all versions through 0.60.6. The flaw lies in the "Goto URL" browser-step action, which fails to validate the destination address before navigating, letting an unauthenticated attacker force the application server to issue requests to internal or restricted network locations. The issue is rated HIGH severity.

Technical details

  • Root cause: The action_goto_url function in browser_steps.py passes the browser step’s optional_value parameter directly to the underlying browser automation page.goto() call with no validation of the target address.
  • Trigger conditions: A user (including an unauthenticated attacker, per the CVE description) configures or submits a watch containing a "Goto URL" browser step whose target is an internal or restricted address (e.g., loopback, link-local, or private RFC1918 ranges, or cloud metadata endpoints).
  • Attack vector: Network — no authentication or user interaction beyond submitting the crafted browser step is required.
  • Impact: The application server can be coerced into fetching content from internal-only services, enabling network reconnaissance and disclosure of internal HTTP responses (e.g., internal APIs, admin panels, or cloud instance metadata). The scored impact is limited to confidentiality; integrity and availability are not affected.

Affected software

  • changedetection.io versions 0 through 0.60.6 (all releases up to and including 0.60.6)

Severity

  • CVSS v4.0 Base Score: 8.7 (HIGH) — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  • CVSS v3.1 Base Score: 7.5 (HIGH) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Mitigation and recommended actions

  • Immediate: As of this writing, no vendor-confirmed patched release for this specific browser-step SSRF issue has been identified. Monitor the official changedetection.io GitHub repository and release notes for a fix and upgrade as soon as one is published.
  • If no patch is available:
    • Restrict or disable use of the "Goto URL" browser step feature where not strictly required.
    • Apply egress filtering on the host running changedetection.io so it cannot reach internal-only networks, loopback addresses, link-local ranges, or cloud metadata services (e.g., 169.254.169.254).
    • Place changedetection.io behind authentication and avoid exposing its interface directly to the internet.
    • Segment the host running changedetection.io away from sensitive internal services using firewall rules or network ACLs.

References

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