{"id":"CVE-2026-35601","sourceIdentifier":"security-advisories@github.com","published":"2026-04-10T17:17:03.837","lastModified":"2026-06-17T10:40:50.680","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV output generator builds iCalendar VTODO entries via raw string concatenation without applying RFC 5545 TEXT value escaping. User-controlled task titles containing CRLF characters break the iCalendar property boundary, allowing injection of arbitrary iCalendar properties such as ATTACH, VALARM, or ORGANIZER. This vulnerability is fixed in 2.3.0."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"go-vikunja","product":"vikunja","versions":[{"version":"< 2.3.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N","baseScore":4.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.3,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-13T15:28:32.662262Z","id":"CVE-2026-35601","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-93"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*","versionEndExcluding":"2.3.0","matchCriteriaId":"CC8B46CF-6E7B-46F4-8275-D1A38F2A6D5E"}]}]}],"references":[{"url":"https://github.com/go-vikunja/vikunja/pull/2580","source":"security-advisories@github.com","tags":["Issue Tracking"]},{"url":"https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4r","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4r","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Vendor Advisory"]}]}