CVE-2026-9304

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.

Score

CVSS 3.1 5.0 Medium

Status

Deferred - cna@vuldb.com

Published

2026-05-23

Last modified

2026-05-26

Weaknesses

CWE-918

Affected products

• Cal.diy (Calcom)

References

• https://gist.github.com/YLChen-007/b3d0b85767b7e346a291933d602fbb3b
• https://vuldb.com/submit/812176
• https://vuldb.com/vuln/365251
• https://vuldb.com/vuln/365251/cti