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Medium · 5.3 CVE-2026-48945 EUVD-2026-39447GHSA-6mmg-h49f-fj9x

Joomla Extension - getk2.org - Privileged RCE vulnerability in K2 extension for Joomla < 2.26

Published Jun 25, 2026 · Updated Jun 28, 2026 · Assigned by Joomla

Description

The K2 article gallery upload path accepts a zip/tar archive, extracts it under `/media/k2/galleries/<id>/`, and only renames image files (gif/jpg/jpeg/png/webp) to safe names — non-image files (including `.php`) are extracted as-is and remain executable via direct HTTP access.

Affected products

VendorProductAffectedFixed
getk2.org K2 extension for Joomla 1.0-2.26 —

References