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Vulnerability record · CVE-2021-23394 · published 13 June 2021

CVE-2021-23394: Std42 elfinder unrestricted file upload vulnerability

Std42 · Elfinder

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.

9.8 CVSS 3.1 Critical EPSS 19% · top 2.8% CWE-434 · Unrestricted file upload
9.8CVSS 3.1 base score, v2 6.8
19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 4 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://blog.sonarsource.com/elfinder-case-study-of-web-file-manager-vulnerabilities/ ExploitThird Party Advisory
https://github.com/Studio-42/elFinder Third Party Advisory
https://github.com/Studio-42/elFinder/commit/75ea92decc16a5daf7f618f85dc621d1b534b5e1 PatchThird Party Advisory
https://github.com/Studio-42/elFinder/issues/3295 ExploitIssue TrackingPatchThird Party Advisory
https://snyk.io/vuln/SNYK-PHP-STUDIO42ELFINDER-1290554 Third Party Advisory
https://blog.sonarsource.com/elfinder-case-study-of-web-file-manager-vulnerabilities/ ExploitThird Party Advisory
https://github.com/Studio-42/elFinder Third Party Advisory
https://github.com/Studio-42/elFinder/commit/75ea92decc16a5daf7f618f85dc621d1b534b5e1 PatchThird Party Advisory
https://github.com/Studio-42/elFinder/issues/3295 ExploitIssue TrackingPatchThird Party Advisory
https://snyk.io/vuln/SNYK-PHP-STUDIO42ELFINDER-1290554 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-52044Std42 elfinder unrestricted file upload vulnerabilityStudio-42 eLfinder 2.1.62 is vulnerable to Remote Code Execution (RCE) as there is no restriction for uploading files with the .php8 extension.EPSS 0.79%9.8CVE-2024-38909Std42 elfinder improper access control vulnerabilityStudio 42 elFinder 2.1.64 is vulnerable to Incorrect Access Control. Copying files with an unauthorized extension between server directories allows a…EPSS 0.48%9.8CVE-2022-27115Std42 elfinder unrestricted file upload vulnerabilityIn Studio-42 elFinder 2.1.60, there is a vulnerability that causes remote code execution through file name bypass for file upload.EPSS 29%9.8CVE-2021-43421Std42 elfinder unrestricted file upload vulnerabilityA File Upload vulnerability exists in Studio-42 elFinder 2.0.4 to 2.1.59 via connector.minimal.php, which allows a remote malicious user to upload ar…EPSS 43%9.8CVE-2021-32682elFinder PHP connector path traversal, command injection and SSRFSeveral vulnerabilities in elFinder 2.1.58 affect the PHP connector, combining path traversal, OS command injection and server-side request forgery. …EPSS 70%analysed9.8CVE-2019-9194elFinder PHP connector command injection before 2.1.48elFinder before 2.1.48 contains an OS command injection flaw in its PHP connector (CWE-78). The vulnerability is remotely reachable without authentic…EPSS 97%analysed9.1CVE-2022-26960elFinder path traversal in connector.minimal.php allows file access outside rootconnector.minimal.php in std42 elFinder through 2.1.60 mishandles absolute file paths, enabling path traversal. Unauthenticated remote attackers can …EPSS 51%analysed9.1CVE-2018-9110Std42 elfinder path traversal vulnerabilityStudio 42 elFinder before 2.1.37 has a directory traversal vulnerability in elFinder.class.php with the zipdl() function that can allow a remote atta…EPSS 2.9%

Source: NIST National Vulnerability Database (record CVE-2021-23394), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.