Main Vulnerability Database Vulnerabilities #VU138307

Arbitrary file upload in iCagenda - CVE-2026-48939

Published: July 17, 2026

Vulnerability identifier: #VU138307

CSH Severity: Critical

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-48939

CWE-ID: CWE-434

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload. A remote non-authenticated attacker can upload a malicious PHP file and execute it on the server.

Affected software

iCagenda

How to mitigate CVE-2026-48939

Install updates from vendor's website.

iCagenda - addressed in versions 3.9.15, 4.0.8

Links to Public Exploits and PoC-codes

Exploit #12815 - CVE-2026-48939 (Pre-auth arbitrary file upload RCE exploit for iCagenda Joomla extension < 4.0.8 (CVSS 10.0)) (July 17, 2026)

External References

Related Security Bulletins

Arbitrary file upload in iCagenda extension for Joomla!