CVE-2026-9813 FlowIntel external reference URL probe allows server-side request forgery

Medium 6.2 Published Updated

Attackers can exploit SSRF in FlowIntel to force the server to access internal network resources or cloud metadata endpoints.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-9813?

CVE-2026-9813 is a medium-severity server-side request forgery vulnerability in flowintel, published on 28 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-918

Which versions are affected by CVE-2026-9813?

It affects 1 product.

Products include Flowintel Flowintel.

How do I fix CVE-2026-9813?

No fix has been published for CVE-2026-9813 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-9813 being exploited?

There is no known exploitation of CVE-2026-9813 in the wild and no public exploit code.

Sources

Also known as GHSA-58wp-jwch-fgj5.

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