CVE-2026-48939

9.8 CRITICAL CISA KEV - Actively Exploited
Published: June 20, 2026 Modified: July 11, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://www.icagenda.com/
Source: security@joomla.org
Product
https://github.com/Polosss/By-Poloss..-..CVE-2026-48939
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Third Party Advisory
https://mysites.guru/blog/icagenda-zero-day-file-upload-rce/
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48939
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource
https://www.icagenda.com/docs/changelog/icagenda-3-9-15
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Release Notes
https://www.icagenda.com/docs/changelog/icagenda-4-0-8
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Release Notes

6 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
24.3%
98th percentile
Exploitation Status
Actively Exploited
Remediation due: 2026-07-13

Weaknesses (CWE)

CWE-434 CWE-434

Affected Vendors

joomlic

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