Is CVE-2026-9304 actively exploited?

No active exploitation of CVE-2026-9304 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-9304 be exploited remotely?

Yes. CVE-2026-9304 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-9304?

CVE-2026-9304 has a CVSS score of 5.0 (MEDIUM).

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MEDIUM

CVE-2026-9304

CWE-918Published: May 23, 2026· Updated: May 26, 2026

5.0

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:10.1th

Official Description

A security flaw has been discovered in calcom cal.diy up to 4.9.4. The affected element is the function validateUrlForSSRF of the file apps/web/app/api/logo/route.ts of the component Logo API. The manipulation results in server-side request forgery. It is possible to launch the attack remotely. Attacks of this nature are highly complex. The exploitability is described as difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

NVD Source

Technical Analysis

CVE-2026-9304 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.