CVE-2026-48939

CriticalActively exploited (CISA KEV)

Description

A vulnerability in the iCagenda extension for Joomla allows the upload of arbitrary files in the file attachment feature, ultimately resulting in PHP code upload and execution.

SeverityCritical
CVSS9.8
Exploit probability—
ProductiCagenda
PublishedJun 20, 2026
First seenJun 20, 2026
Added to KEVJul 10, 2026

How to fix

CISA required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CISA due date: Jul 13, 2026
Update
  • joomlic icagenda3.9.15, 4.0.8 or later

Affected products

ProductAffected versionsFixed in
joomlic icagenda3.2.1 ≤ v < 3.9.15, 4.0.0 ≤ v < 4.0.83.9.15, 4.0.8

Check your version

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CVE-2026-48939 · iCagenda · Dark Radar