CVE-2026-48939
icagenda.com iCagenda extension for Joomla
Published 20 Jun 2026 · updated 11 Jul 2026 · Analyzed
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 10 Jul 2026, with a remediation deadline of 13 Jul 2026 for US federal agencies.
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.
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
- www.icagenda.com/ · Product
- github.com/Polosss/By-Poloss..-..CVE-2026-48939 · Exploit, Third Party Advisory
- mysites.guru/blog/icagenda-zero-day-file-upload-rce/ · Third Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48939 · US Government Resource
- www.icagenda.com/docs/changelog/icagenda-3-9-15 · Release Notes
- www.icagenda.com/docs/changelog/icagenda-4-0-8 · Release Notes