CVE-2026-88857CWE-434unrestricted-file-upload

CVE-2026-88857

published September 20, 2026

CVSS
9.4
EPSS
1%
Percentile
50.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
9.4 · NONE
CVSS v4.0
9.4 · 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
EPSS
0.00642 · 50.1th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-09-20T22:16Z
References (1)
https://www.OrdaSoft.com/ · [email protected]
EPSS history
Timeline
  • 22 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 20 SEP 17:54Z
    Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7
    cvelistv5