{"schema_version":"1.9.0","id":"CVE-2026-33680","published":"2026-03-24T15:47:47.529Z","modified":"2026-08-12T03:51:41.566925029Z","aliases":["GHSA-8hp8-9fhr-pfm9","GO-2026-4848"],"related":["SUSE-SU-2026:1135-1","openSUSE-SU-2026:21483-1"],"summary":"Vikunja Vulnerable to Link Share Hash Disclosure via ReadAll Endpoint Enables Permission Escalation","details":"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.","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/go-vikunja/vikunja","events":[{"introduced":"0"},{"fixed":"772316b47f966cfce07c8241a099088aff0e6a74"},{"fixed":"9efe1fadba817923c7c7f5953c3e9e9c5683bbf3"}],"database_specific":{"cpe":"cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"2.2.2"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["v2.2.1","v2.2.0","v2.1.0","v2.0.0","v1.1.0","v1.0.0","v1.0.0-rc4","v1.0.0-rc3","v1.0.0-rc2","v1.0.0-rc1","v1.0.0-rc0","v0.24.1","v0.23.0","v0.22.1","v0.22.0","v0.21.0","v0.20.4","v0.20.3","v0.20.1","v0.20.0","v0.19.2","v0.19.1","v0.19.0","v0.18.1","v0.18.0","v0.17.0","v0.16.0","v0.15.0","v0.14.0","v0.13","v0.12","v0.11","v0.10","v0.9","v0.8","v0.7","v0.6","v0.5","v0.4","v0.3","v0.2","v0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33680.json"}}],"references":[{"type":"WEB","url":"https://vikunja.io/changelog/vikunja-v2.2.2-was-released"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33680.json"},{"type":"ADVISORY","url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8hp8-9fhr-pfm9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33680"},{"type":"FIX","url":"https://github.com/go-vikunja/vikunja/commit/9efe1fadba817923c7c7f5953c3e9e9c5683bbf3"}],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-285"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33680.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}