MSRXCVE-2026-48939
CVE-2026-48939
iCagenda Unrestricted Upload of File with Dangerous Type Vulnerability
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.
CVSS 4.0 · CNA · joomla.org
chance of exploitation in the next 30 days (EPSS; higher than 97% of CVEs)
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.
Scores
Affected products
- joomlic icagenda: ≥ 3.2.1, < 3.9.15; ≥ 4.0.0, < 4.0.8
Weakness: CWE-434
6 references (advisories, patches, write-ups)
- https://www.icagenda.com/ · Product
- https://github.com/Polosss/By-Poloss..-..CVE-2026-48939 · Exploit, 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-2026-48939 · US Government Resource
- https://www.icagenda.com/docs/changelog/icagenda-3-9-15 · Release Notes
- https://www.icagenda.com/docs/changelog/icagenda-4-0-8 · Release Notes
Sources: NVD, CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.