CVE-2020-37023 json
Koken CMS 0.22.24 - Arbitrary File Upload
published 9mo ago modified 4mo ago also EUVD-2020-30953
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
Koken CMS 0.22.24 contains a file upload vulnerability that allows authenticated attackers to bypass file extension restrictions by renaming malicious PHP files. Attackers can upload PHP files with system command execution capabilities by manipulating the file upload request through a web proxy and changing the file extension.
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Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 9mo ago
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- exploit-db.com https://www.exploit-db.com/exploits/48706 referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/V1n1v131r4/Bypass-File-Upload-on-Koken-CMS/blob/master/README.md referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- Koken Koken CMS
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
exploit-db.com
/exploits/48706
exploit
-
github.com
/V1n1v131r4/Bypass-File-Upload-on-Koken-CMS/blob/master/README.md
technical-description, exploit
-
koken.me
/
product
-
softaculous.com
/apps/cms/Koken
product
-
vulncheck.com
/advisories/koken-cms-arbitrary-file-upload
third-party-advisory
Sources
- CVE List CVE-2020-37023
- NVD CVE-2020-37023
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