CVE-2021-23394

Public Exploit
Remote Code Execution (RCE)

Description

The package studio-42/elfinder before 2.1.58 are vulnerable to Remote Code Execution (RCE) via execution of PHP code in a .phar file. NOTE: This only applies if the server parses .phar files as PHP.

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.36% Top 25%
Third-Party Advisory sonarsource.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory snyk.io
Affected: n/a studio-42/elfinder
Published at:
Updated at:

References

Link Tags
https://snyk.io/vuln/SNYK-PHP-STUDIO42ELFINDER-1290554 third party advisory
https://github.com/Studio-42/elFinder third party advisory
https://github.com/Studio-42/elFinder/issues/3295 patch exploit third party advisory issue tracking
https://github.com/Studio-42/elFinder/commit/75ea92decc16a5daf7f618f85dc621d1b534b5e1 third party advisory patch
https://blog.sonarsource.com/elfinder-case-study-of-web-file-manager-vulnerabilities/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-23394?
CVE-2021-23394 has been scored as a high severity vulnerability.
How to fix CVE-2021-23394?
To fix CVE-2021-23394, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-23394 being actively exploited in the wild?
It is possible that CVE-2021-23394 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-23394?
CVE-2021-23394 affects n/a studio-42/elfinder.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.