{"id":"CVE-2026-102799","kind":"vulnerability","aliases":["CVE-2026-102799"],"related":[],"title":"iCagenda Joomla extension: CSV export lets registration fields run formulas","description":"Joomla Extension - icagenda.com - CSV formula injection in the registrations export in iCagenda 3.5.0 to 4.0.16","summary":"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.","severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["joomla","package","php","self-hosted"],"not_affected_if":["fixed-version","icagenda-not-installed"],"how_to_check":"- Check the installed iCagenda version in the Joomla extensions manager; versions 3.5.0 through 4.0.16 are affected.\n- 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).\n- Until updated, avoid opening registration CSV exports in spreadsheet software.","status":"open","published_at":"2026-10-28T12:17:39+00:00","first_seen_at":"2026-10-28T12:32:51+00:00","triaged_at":"2026-10-28T12:33:50+00:00","updated_at":"2026-10-28T12:33:50+00:00","category":"package","confidence":0.5,"triage":{"at":"2026-10-28T12:33:50Z","model":"claude-haiku-5-5","output":{"fix":"- Update iCagenda to a release later than `4.0.16`, per the vendor's release notes (fixed version unknown from sources).\n- Until updated, avoid opening registration CSV exports in spreadsheet software.","reach":"internet","title":"iCagenda Joomla extension: CSV export lets registration fields run formulas","impact":"medium","summary":"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.","category":"package","nicknames":[],"who_cares":["joomla","self-hosted","php"],"confidence":0.5,"needs_auth":"no","worst_case":"Admin's spreadsheet runs injected formulas on their machine.","analyst_note":"Confirm the fixed version and vendor advisory; the NVD entry gives no details beyond the description.","how_to_check":"- Check the installed iCagenda version in the Joomla extensions manager; versions 3.5.0 through 4.0.16 are affected.\n- Look for the iCagenda component under Components in the Joomla administrator.","needs_analyst":true,"not_affected_if":["icagenda-not-installed","fixed-version"],"who_is_affected":"Joomla sites running iCagenda from 3.5.0 through 4.0.16 that collect registrations through public forms. The risk lands on administrators who export the registrations list and open it in a spreadsheet. Sites without iCagenda, or on a fixed version, can skip it.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000625,"input_tokens":3276,"output_tokens":595,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-102799':13A,16A '-2026':12A,15A '3.5.0':82C '4.0.16':84C 'action':64B 'admin':67B 'administr':45B 'csv':4A,25B,73C 'cve':11A,14A 'data':61B 'event':31B 'export':5A,26B,48B,79C 'extens':3A,32B,71C 'field':8A,42B 'file':49B 'formula':10A,37B,55B,74C 'host':22B 'icagenda':1A,28B,81C 'icagenda.com':72C 'inject':54B,75C 'joomla':2A,17B,30B,70C 'leak':60B 'let':6A 'machin':69B 'may':59B 'neutral':35B 'open':46B 'packag':18B 'php':19B 'program':53B 'registr':7A,24B,78C 'run':9A,57B 'self':21B 'self-host':20B 'spreadsheet':36B,52B 'suppli':41B 'trigger':63B 'user':40B 'user-suppli':39B","nicknames":[],"mitigations":[],"who_affected":"Joomla sites running iCagenda from 3.5.0 through 4.0.16 that collect registrations through public forms. The risk lands on administrators who export the registrations list and open it in a spreadsheet. Sites without iCagenda, or on a fixed version, can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-28T12:17:39+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"security@joomla.org","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-102799","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102799","severity":null,"published_at":"2026-10-28T12:17:39+00:00","modified_at":"2026-10-28T12:17:39+00:00","first_seen_at":"2026-10-28T12:32:51+00:00","fetched_at":"2026-10-28T12:32:51+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}