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CVE-2026-9303

calcom cal.diy cross-site request forgery

MEDIUM
4.3
CVSS Score
Published: May 23, 2026 at 01:30 PM UTC
Updated: July 23, 2026 at 07:32 PM UTC
1 product affected across 1 vendorCal.diy

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

A vulnerability was identified in calcom cal.diy up to 4.9.4. Impacted is an unknown function. The manipulation leads to cross-site request forgery. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (6)

VDB Entry
Source: cverecord
https://vuldb.com/vuln/365250
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/365250/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/812173
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/812175
Related
Source: cverecord
https://gist.github.com/YLChen-007/26663d9558e15994176dc420d2e11d48
Exploit
Source: cverecord
https://gist.github.com/YLChen-007/dafada36e356bc895b09829d8ec57e49

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-352CWE-862

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