CVE-2026-9813CWE-918

FlowIntel external reference URL probe allows server-side request forgery

Medium · published May 28, 2026

CVSS v4.0
6.2
EPSS
0%
Percentile
35.0
In the wild
Unconfirmed
What it is

FlowIntel up to version 3.3.0 contains a server-side request forgery (SSRF) vulnerability in the external reference URL probe functionality in app/case/task.py. An attacker who can submit an external reference URL can cause the application server to issue an HTTP HEAD request to an attacker-specified destination. Due to insufficient validation of the URL scheme and resolved destination address, affected versions may allow requests to loopback, link-local, private, reserved, or other restricted network resources, potentially enabling interaction with internal services or cloud metadata endpoints from the server's network context.

The record
Technical detail
CVSS v4.0
6.2 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:H/SA:H/S:N/RE:L/U:Green
EPSS
0.00417 · 35.0th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-05-28T09:27Z
EPSS history
Timeline
  • 28 MAY 09:27Z
    FlowIntel external reference URL probe allows server-side request forgery
    cvelistv5