CVE-2026-48945

MEDIUM

K2 for Joomla < 2.26 - Gallery Archive PHP Upload Remote Code Execution

Title source: manual

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.

References (1)

Core 1

Core References

Product product

https://www.getk2.org/

Scores

CVSS v3 5.3

EPSS 0.0020

EPSS Percentile 9.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-434

Status published

Products (3)

getk2.com/K2 extension for Joomla 1.0-2.26

getk2.org/K2 extension for Joomla 1.0-2.26

joomlaworks/k2 < 2.26

Published Jun 25, 2026

Tracked Since Jun 25, 2026