Arbitrary file upload in Classyfrieds Project
CVE-2021-24253
The Classyfrieds WordPress plugin through 3.8 does not properly check the uploaded file when an authenticated user adds a listing, only checking the content-type in the request. This allows any authenticated user to upload arbitrary PHP files via the Add Listing feature of the plugin, leading to RCE.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.019 (79.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
- Classyfrieds Project
- Classyfrieds — versions 3.8
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/ee42c233-0ff6-4b27-a5ec-ad3246bef079 (Exploit, Third Party Advisory)
- github.com/jinhuang1102/CVE-ID-Reports/blob/master/classyfrieds.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24253?
- CVE-2021-24253 is a high-severity vulnerability in Classyfrieds Project, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2021-05-06.
- How severe is CVE-2021-24253?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-24253 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.