{"cve":"CVE-2026-35598","nvd":{"published":"2026-04-10T17:17:03.370","modified":"2026-10-26T21:10:00.170","status":"Analyzed","description":"Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV GetResource and GetResourcesByList methods fetch tasks by UID from the database without verifying that the authenticated user has access to the task's project. Any authenticated CalDAV user who knows (or guesses) a task UID can read the full task data from any project on the instance. This vulnerability is fixed in 2.3.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3},"cwes":["CWE-862"],"references":["https://github.com/go-vikunja/vikunja/commit/879462d717351fe5d276ddec5246bdec31b41661","https://github.com/go-vikunja/vikunja/pull/2579","https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0","https://github.com/go-vikunja/vikunja/security/advisories/GHSA-48ch-p4gq-x46x","https://github.com/go-vikunja/vikunja/security/advisories/GHSA-48ch-p4gq-x46x"],"products":["vikunja:vikunja"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-35598","score":0.00216,"percentile":0.11925,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-48ch-p4gq-x46x","url":"https://osv.dev/vulnerability/GHSA-48ch-p4gq-x46x","summary":"Vikunja Missing Authorization on CalDAV Task Read","modified":"2026-06-25T18:56:16.068797331Z","packages":[{"ecosystem":"Go","name":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","ranges":["<2.3.0"],"fixed":["2.3.0"]}]},{"id":"GO-2026-5114","url":"https://osv.dev/vulnerability/GO-2026-5114","summary":"Vikunja Missing Authorization on CalDAV Task Read in code.vikunja.io/api","modified":"2026-06-25T18:45:22.274197979Z","packages":[{"ecosystem":"Go","name":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}