---
id: CVE-2026-88856
title: >-
  Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code
  Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7 - The
  extensions updateOSGallery(), reached via task=update_osgallery, read a JSON
  request body and…
summary: >-
  Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code
  Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7 - The
  extensions updateOSGallery(), reached via task=update_osgallery, read a JSON
  request body and…
severity: critical
cvss: 9.4
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'
cwe:
  - CWE-94
vendor: OrdaSoft.com
product: com_osgallery_light
affected:
  - com_osgallery_light 1.0.0-6.2.6
  - com_osgallery 1.0.0-6.2.6
published: '2026-09-20'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T19:34:57.263'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88856'
references:
  - url: 'https://www.OrdaSoft.com/'
    label: security@joomla.org
tags:
  - nvd
  - cve.org
epss: 0.00666
epssPercentile: 0.49793
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-21T14:05:46.113282Z'
cvssSource: cna
ingestedAt: '2026-09-20T18:24:59.756Z'
---

## Overview

Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7 - The extensions updateOSGallery(), reached via task=update_osgallery, read a JSON request body and called the value of a method field as a live PHP function, passing the value of a package field as its single argument, with no allow-list or is_callable() check of any kind. Any function name compatible with a single argument was directly reachable, including system, exec, shell_exec, and passthru.

## Remediation

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