{"id":"CVE-2026-33680","published":"2026-03-24T15:47:47Z","modified":"2026-03-26T19:52:13Z","title":"Vikunja Vulnerable to Link Share Hash Disclosure via ReadAll Endpoint Enables Permission Escalation","vendor":"go-vikunja","product":"vikunja","tier":"tail","description":{"text":"Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.2, the `LinkSharing.ReadAll()` method allows link share authenticated users to list all link shares for a project, including their secret hashes. While `LinkSharing.CanRead()` correctly blocks link share users from reading individual shares via `ReadOne`, the `ReadAllWeb` handler bypasses this check by never calling `CanRead()`. An attacker with a read-only link share can retrieve hashes for write or admin link shares on the same project and authenticate with them, escalating to full admin access. Version 2.2.2 patches the issue.","provenance":"source","from":"CVE.org"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00405,"percentile":0.34687,"provenance":"source"},"cwes":[{"id":"CWE-285","name":"Improper Authorization"}],"references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8hp8-9fhr-pfm9","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/go-vikunja/vikunja/commit/9efe1fadba817923c7c7f5953c3e9e9c5683bbf3","tags":["x_refsource_MISC"]},{"url":"https://vikunja.io/changelog/vikunja-v2.2.2-was-released","tags":["x_refsource_MISC"]}],"priority":{"score":12.2,"factors":[{"name":"EPSS percentile","points":6.94},{"name":"CVSS severity","points":5.25}]},"vendorSlug":"go-vikunja","affectedVersions":[{"vendor":"go-vikunja","product":"vikunja","versions":["< 2.2.2"]}],"affected":[{"ecosystem":"Go","package":"code.vikunja.io/api","vulnerableRanges":["<2.2.2","all versions"],"patched":["2.2.2"],"from":["GHSA-8hp8-9fhr-pfm9","GO-2026-4848"],"provenance":"source"}],"euvd":{"id":"EUVD-2026-14925","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-go-vikunja-vikunja-cve-2026-33678","children":[{"from":"CVE-2026-33680","to":"CVE-2026-56765","relation":"related","confidence":"high","kind":"lineage","evidence":[{"kind":"osv-related","provenance":"source","id":"GHSA-2pv8-4c52-mf8j","via":"reference","url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8hp8-9fhr-pfm9"},{"kind":"osv-related","provenance":"source","id":"GO-2026-4855","via":"reference","url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8hp8-9fhr-pfm9"}]}]}}