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Not in CISA KEV
HIGH severity

CVE-2021-23814 — laravel-filemanager

HIGHFix: UniSharp/laravel-filemanager@bd84899

CVE-2021-23814 is a high-severity (CVSS 8.8) Code Injection vulnerability in unisharp/laravel-filemanager. A fix is available for unisharp/laravel-filemanager — see the affected versions and patch details below.

Unrestricted Upload of File with Dangerous Type in unisharp/laravel-filemanager

Also known asGHSA-f8x6-m9f5-ffp8SNYK-PHP-UNISHARPLARAVELFILEMANAGER-1567199
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.8%probability of exploitation in next 30 days
Lower Risk+0.06%
Lower risk than most CVEs78th percentile — riskier than 78% of all scored CVEsHighest risk
1.27%1.71%2.15%2.59%2.1%1.8%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2021-23814 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,386 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
🐘unisharp/laravel-filemanager

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

This affects versions of the package unisharp/laravel-filemanager before 2.6.2. The upload() function does not sufficiently validate the file type when uploading.

An attacker may be able to reproduce the following steps:

  1. Install a package with a web Laravel application.
  2. Navigate to the Upload window
  3. Upload an image file, then capture the request
  4. Edit the request contents with a malicious file (webshell)
  5. Enter the path of file uploaded on URL - Remote Code Execution

Note: Prevention for bad extensions can be done by using a whitelist in the config file(lfm.php). Corresponding document can be found in here.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistunisharp/laravel-filemanagerall versions2.6.2composer require unisharp/laravel-filemanager:^2.6.2

Affected Products

1 product · 1 configurations
Application
laravel-filemanagerunisharp
≥ 0.0.0
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for unisharp/laravel-filemanager, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update unisharp/laravel-filemanager to 2.6.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-23814 is resolved across your whole dependency graph.

  3. Workarounds

    Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Frequently Asked Questions

This affects the package unisharp/laravel-filemanager prior to version 2.6.2. The `upload()` function does not sufficiently validate the file type when uploading. An attacker may be able to reproduce the following steps: - Install a package with a web Laravel application. - Navigate to the Upload window - Upload an image file, then capture the request - Edit the request contents with a malicious file (webshell) - Enter the path of file uploaded on URL - Remote Code Execution **Note: Prevention for bad extensions can be done by using a whitelist in the config file(lfm.php). Corresponding docu
O3 Security · Impact-Aware SCA

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CVE-2021-23814: laravel-filemanager RCE — Fixed in 2.6.2