Arbitrary file upload in N5 Upload Form Project
CVE-2021-24223
The N5 Upload Form WordPress plugin through 1.0 suffers from an arbitrary file upload issue in page where a Form from the plugin is embed, as any file can be uploaded. The uploaded filename might be hard to guess as it's generated with md5(uniqid(rand())), however, in the case of misconfigured servers with Directory listing enabled, accessing it is trivial.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (82.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- N5 Upload Form Project
- N5 Upload Form — versions 1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/d7a72183-0cd1-45de-b98b-2e295b27e5db (Exploit, Third Party Advisory)
- github.com/jinhuang1102/CVE-ID-Reports/blob/12863f80ced5361e2e2c3f7209566ab3730… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24223?
- CVE-2021-24223 is a critical-severity vulnerability in N5 Upload Form Project, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-04-12.
- How severe is CVE-2021-24223?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-24223 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.