CVE-2021-36581

9.8 criticalEPSS 1.4%

Critical (9.8) in kooboo kooboo cms. EPSS 1.4% chance of exploitation in the next 30 days.

Kooboo CMS 2.1.1.0 is vulnerable to Insecure file upload. It is possible to upload any file extension to the server. The server does not verify the extension of the file and the tester was able to upload an aspx to the server.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 1.4% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
CWE: CWE-434
Published: 2021-09-14
Modified: 2026-07-09
Record from: the NVD, synced 2026-10-19

Affected

kooboo:kooboo_cms

References

https://github.com/l00neyhacker/CVE-2021-36581/
https://github.com/l00neyhacker/CVE-2021-36581/

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