CVE-2026-48939

CriticalCVSS 9.8/10Known exploited (CISA KEV)Last modified Oct 25, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-434

Affected software

Vendor	Product	Versions
icagenda.com	iCagenda extension for Joomla	3.2.1-4.0.7

References

https://www.icagenda.com/Product
https://github.com/Polosss/By-Poloss..-..CVE-2026-48939Exploit, Third Party Advisory
https://mysites.guru/blog/icagenda-zero-day-file-upload-rce/Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48939US Government Resource
https://www.icagenda.com/docs/changelog/icagenda-3-9-15Release Notes
https://www.icagenda.com/docs/changelog/icagenda-4-0-8Release Notes

Timeline

Published: Jun 20, 2026
Last modified: Oct 25, 2026
Added to CISA KEV: Jul 10, 2026
NVD status: Analyzed

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