CVE-2026-9303

2.1 lowEPSS 0.2%

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.

Severity

CVSS 4.0

2.1 low

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

CVSS 3.1

4.3 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-31)
CWEs: CWE-352, CWE-862
Published: 2026-05-23
Modified: 2026-07-23
Record from: the NVD, synced 2026-10-19

References

https://gist.github.com/YLChen-007/26663d9558e15994176dc420d2e11d48
https://gist.github.com/YLChen-007/dafada36e356bc895b09829d8ec57e49
https://vuldb.com/submit/812173
https://vuldb.com/submit/812175
https://vuldb.com/vuln/365250

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