CVE-2026-41247 elFinder: Command injection in resize background color parameter when using ImageMagick CLI

What is CVE-2026-41247?

CVE-2026-41247 is a high-severity command injection vulnerability in Studio-42 elFinder, published on 23 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

elFinder is an open-source file manager for web, written in JavaScript using jQuery UI. Prior to 2.1.67, elFinder contains a command injection vulnerability in the resize command. The bg (background color) parameter is accepted from user input and passed through image resize/rotate processing. In configurations that use the ImageMagick CLI backend, this value is incorporated into shell command strings without sufficient escaping. An attacker able to invoke the resize command with a crafted bg value may achieve arbitrary command execution as the web server process user. This vulnerability is fixed in 2.1.67.

Weakness: CWE-78

Which versions are affected by CVE-2026-41247?

2 open source packages ship an affected version, including studio-42/elfinder. It affects 1 product.

Products include Std42 Elfinder.

How do I fix CVE-2026-41247?

Upgrade studio-42/elfinder to 2.1.67 or later.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-41247 being exploited?

There is no known exploitation of CVE-2026-41247 in the wild and no public exploit code.

Other vulnerabilities in Studio-42 elFinder

• CVE-2023-52044 File upload in n/a Critical 9.8
• CVE-2024-38909 Studio 42 elFinder vulnerable to Incorrect Access Control Critical 9.8
• CVE-2022-27115 RCE in Studio-42 elFinder on Windows before 2.1.61 Critical 9.8
• CVE-2021-43421 elFinder Unrestricted File Upload vulnerability Critical 9.8
• CVE-2021-32682 Multiple vulnerabilities leading to RCE Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-8q4h-8crm-5cvc.