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CVE-2026-88857— Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7

Quick assessment

Affected
OrdaSoft.com OrdaSoft Joomla Gallery free extension for Joomla
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Joomla 扩展 - OrdaSoft.com - OrdaSoft Joomla Gallery 扩展（适用于 Joomla < 6.2.7）中的已认证特权远程代码执行漏洞 - 该扩展的 函数在将上传文件复制到 Web 可访问目录时，直接使用了客户端提供的原始文件名，未进行任何扩展名校验、内容检查或文件名净化处理。已认证的 权限用户可上传伪装为图像 Content-Type 头的 .php 文件，并通过请求生成的路径直接执行该文件。

CVSS 9.4 · Critical

Possible ATT&CK Techniques 2 AI

T1059.007 · JavaScript T1190.024

Affected Version Matrix 2

VendorProduct Version RangeStatus
OrdaSoft.com OrdaSoft Joomla Gallery extension for Joomla 1.0.0-6.2.6 affected
OrdaSoft.com OrdaSoft Joomla Gallery free extension for Joomla 1.0.0-6.2.6 affected
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I. Basic Information for CVE-2026-88857

Vulnerability Information
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Vulnerability Title
Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7
Source: CVE Program / CVE List V5
Vulnerability Description
Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7 - The extensions saveWatermark() copied an uploaded file into a web-accessible directory using the client-supplied filename exactly as sent, with no extension check, no content check, and no filename sanitisation of any kind. An authenticated core.manage user could upload a .php file disguised with an image Content-Type header and execute it directly by requesting the resulting path.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
OrdaSoft.com OrdaSoft Joomla Gallery free extension for Joomla 1.0.0-6.2.6 -
OrdaSoft.com OrdaSoft Joomla Gallery extension for Joomla 1.0.0-6.2.6 -

II. Public POCs for CVE-2026-88857

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III. Intelligence Information for CVE-2026-88857

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Other References for CVE-2026-88857 (1)

Same Patch Batch · OrdaSoft.com · 2026-09-20 · 4 CVEs total

CVE-2026-88856 9.4 CRITICAL Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code Execution in OrdaS
CVE-2026-88854 9.3 CRITICAL Joomla Extension - OrdaSoft.com - Unauthenticated SQL Injection in OrdaSoft Joomla Gallery
CVE-2026-88855 8.6 HIGH Joomla Extension - OrdaSoft.com - Authenticated, Privileged SQL Injection in OrdaSoft Joom

IV. Related Vulnerabilities

Same product: OrdaSoft Joomla Gallery free extension for Joomla
Same vendor: OrdaSoft.com
Same weakness: CWE-434

V. Comments for CVE-2026-88857

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