CVE•Published 2021-09-14•Modified 2026-07-09•1 article on news•5 live references•NVD data
CVE-2021-36581Kooboo · Kooboo_cms
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
71
Exploit Prediction Scoring System · top 29% of all CVEs
Weaknesses (CWE)
Description
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.
Timeline
Published 2021-09-14
Modified 2026-07-09
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2021-36581Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Kooboo Kooboo Cms" version:"2.1.1.0"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Kooboo Cms"HTTP body or banner mentions "Kooboo Cms" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2021-36581Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2021-36581Censys host search filtered to this CVE id.
grep.app
CVE-2021-36581Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2021-36581GitHub code search for direct mentions.
Google dork
"CVE-2021-36581" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2021-36581 on GitHub.