The Icalendar Project maintains a calendar data format library used for interoperability across scheduling applications and services, with its vulnerability footprint centered on the core icalendar product and recurrent CRLF injection weaknesses in parsing and data handling. Current exploitation activity, severity distribution, and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Icalendar Project over time
Signals from CVEs in this vendor scope (1 CVEs).
1 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-33635MEDIUM iCalendar is a Ruby library for dealing with iCalendar files in the iCalendar format defined by RFC-5545. Starting in version 2.0.0 and prior to version 2.12.2, .ics serialization | Mar 26, 2026 | 4.3 | 18 | NO | NO |
Signals from CVEs in this vendor scope (1 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Icalendar Project.
Media articles that mention a CVE ID that affects a product developed by Icalendar Project — matched by CVE ID, not by vendor name.