CRLF Injection Affecting github.com/go-vikunja/vikunja/pkg/caldav package, versions <2.3.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMGOVIKUNJAVIKUNJAPKGCALDAV-16316425
- published28 Apr 2026
- disclosed10 Apr 2026
- creditadrgs
Introduced: 10 Apr 2026
CVE-2026-35601 Â (opens in a new tab)How to fix?
Upgrade github.com/go-vikunja/vikunja/pkg/caldav to version 2.3.0 or higher.
Overview
Affected versions of this package are vulnerable to CRLF Injection via improper handling of user-supplied input in the ParseTodos function. An attacker can inject arbitrary iCalendar properties by including CRLF characters in task titles or other fields, which are then concatenated into the iCalendar output without proper escaping. This can result in malicious attachments, fake notifications, or spoofed organizer identities being processed by calendar clients when syncing via CalDAV.