CVE-2026-48941: Joomla Extension - getk2.org - Unauthenticated folder delete in K2 extension for Joomla < 2.26

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-25 · updated 2026-10-25
Weakness: CWE-862

Description

The K2 frontend `item.checkin` task accepts an unauthenticated `sigProFolder` query parameter and uses it directly to address a `JFolder::delete()` call under `/media/k2/galleries/`

Affected products

getk2.org K2 extension for Joomla: through 2.26

References

https://www.getk2.org/

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