Arbitrary file upload in Icagenda.com Icagenda Extension For Joomla
CVE-2026-48939
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.
Vulnerability class: Unrestricted File Upload
EPSS: 0.243 (97.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Icagenda.com Icagenda Extension For Joomla — versions 3.2.1-4.0.7, 4.0.0-4.0.7, 1.0.0-3.9.14
- Joomlic Icagenda
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
Public proof-of-concept exploits
References
- security@joomla.org (Product, product)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Third Party Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Release Notes)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Release Notes)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Exploit, Third Party Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2026-48939?
- CVE-2026-48939 is a critical-severity vulnerability in Icagenda.com Icagenda Extension For Joomla, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-06-20.
- How severe is CVE-2026-48939?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-48939 known to be exploited?
- Yes. CVE-2026-48939 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-07-10), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.