---
id: "CVE-2026-102799"
kind: "vulnerability"
aliases: ["CVE-2026-102799"]
title: "iCagenda Joomla extension: CSV export lets registration fields run formulas"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["joomla", "package", "php", "self-hosted"]
not_affected_if: ["fixed-version", "icagenda-not-installed"]
published_at: "2026-10-28T12:17:39+00:00"
first_seen_at: "2026-10-28T12:32:51+00:00"
updated_at: "2026-10-28T12:33:50+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102799", "first_seen_at": "2026-10-28T12:32:51+00:00"}]
---

# iCagenda Joomla extension: CSV export lets registration fields run formulas

The registrations CSV export in iCagenda, a Joomla event extension, does not neutralize spreadsheet formulas in user-supplied fields. When an administrator opens the exported file in a spreadsheet program, injected formulas can run and may leak data or trigger actions on the admin's machine.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed iCagenda version in the Joomla extensions manager; versions 3.5.0 through 4.0.16 are affected.
- Look for the iCagenda component under Components in the Joomla administrator.

## Fix

- Update iCagenda to a release later than `4.0.16`, per the vendor's release notes (fixed version unknown from sources).
- Until updated, avoid opening registration CSV exports in spreadsheet software.

## Timeline

- 2026-10-28T12:32:51+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-102799

## From the sources

Joomla Extension - icagenda.com - CSV formula injection in the registrations export in iCagenda 3.5.0 to 4.0.16

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_