CVE-2026-48939
CRITICAL severity · CVSS 9.8 · Unrestricted file upload · actively exploited (CISA KEV)
9.8CVSS CRITICAL exploited
Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
Added to KEV 2026-07-10. US federal agencies must patch by 2026-07-13.
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)2%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.icagenda.com/
- https://mysites.guru/blog/icagenda-zero-day-file-upload-rce/Advisory
- 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
- https://github.com/Polosss/By-Poloss..-..CVE-2026-48939Advisory