CVE-2026-48939
iCagenda contains an unrestricted upload of file with dangerous type vulnerability that allows the upload of arbitrary files in the file attachment feature, ultimately resulting in PHP code upload and execution.
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La extensión iCagenda para Joomla permite la carga de archivos sin restricciones, facilitando la ejecución remota de código PHP en el servidor. Esta vulnerabilidad está siendo explotada activamente en ataques reales, lo que permite a un atacante tomar control total del sitio web. Es urgente actualizar la extensión para mitigar el riesgo de compromiso de la infraestructura y el sistema de archivos.
Relevant roles
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCWE-434CISA KEV
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.
EPSS
Affects
joomlic:icagendaTechnical 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.
References
- https://www.icagenda.com/
- https://github.com/Polosss/By-Poloss..-..CVE-2026-48939
- https://mysites.guru/blog/icagenda-zero-day-file-upload-rce/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48939
- https://www.icagenda.com/docs/changelog/icagenda-3-9-15
- https://www.icagenda.com/docs/changelog/icagenda-4-0-8