---
id: CVE-2026-81891
title: >-
  elFinder is an open-source file manager for web, written in JavaScript using
  jQuery UI
summary: >-
  elFinder is an open-source file manager for web, written in JavaScript using
  jQuery UI. Prior to 2.1.70, checkExtractItems() in
  php/elFinderVolumeDriver.class.php calls mimetypeInternalDetect() without
  passing the result through mimeType…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-434
vendor: Studio-42
product: Studio-42/elFinder
affected:
  - Studio-42/elFinder < 2.1.70
patched:
  - Studio-42/elFinder 2.1.70
published: '2026-08-31'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:09:13.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81891'
references:
  - url: >-
      https://github.com/Studio-42/elFinder/commit/191372c1bbebbd36fb55af79a84b9984861390ff
    label: security-advisories@github.com
  - url: >-
      https://github.com/Studio-42/elFinder/commit/dd73e702820c146a192969800ee674ecdb208365
    label: security-advisories@github.com
  - url: 'https://github.com/Studio-42/elFinder/releases/tag/2.1.70'
    label: security-advisories@github.com
  - url: >-
      https://github.com/Studio-42/elFinder/security/advisories/GHSA-gxmj-r5rf-ggwq
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81891'
  - url: 'https://github.com/advisories/GHSA-gxmj-r5rf-ggwq'
tags:
  - nvd
  - ghsa
  - composer
epss: 0.00904
epssPercentile: 0.58045
aliases:
  - GHSA-gxmj-r5rf-ggwq
ecosystem: composer
ingestedAt: '2026-09-02T14:45:30.055Z'
---

## Overview

elFinder is an open-source file manager for web, written in JavaScript using jQuery UI. Prior to 2.1.70, checkExtractItems() in php/elFinderVolumeDriver.class.php calls mimetypeInternalDetect() without passing the result through mimeTypeNormalize(). Because the .phtml, .phar, .php5, and .php3 extensions are absent from mime.types, the staticMimeMap entries that map them to text/x-php are not applied, and allowPutMime() permits extraction even when uploadDeny blocks text/x-php. An attacker with ZIP upload permission can extract PHP-executable files into a web-accessible files/ directory and achieve remote code execution when the server executes those extensions. This issue is fixed in version 2.1.70.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-81891)

Affected packages:

- `Studio-42/elFinder < 2.1.70`

Patched in:

- `Studio-42/elFinder 2.1.70`

Source: https://github.com/advisories/GHSA-gxmj-r5rf-ggwq