CVE-2021-24253
8.8 · HIGHOverview
CVE-2021-24253 is a high-severity vulnerability affecting classyfrieds_project classyfrieds. It was published on May 6, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from classyfrieds_project. Update classyfrieds to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| classyfrieds_project | classyfrieds | 0 | Affected |
Frequently Asked Questions
What is CVE-2021-24253?
CVE-2021-24253 is a high-severity vulnerability affecting classyfrieds_project classyfrieds. It was published on May 6, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2021-24253?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-24253?
Check the references section for vendor advisories and patches from classyfrieds_project. Update classyfrieds to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-24253?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-24253 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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