{"id":"GHSA-9c5c-5j4h-8q2c","summary":"BookStack is vulnerable to Improper Access Control.","details":"BookStack prior to version 21.11.3 is vulnerable to Improper Access Control. A logged-in user with no privileges OR guest user (if public access enabled) can access the /search/users/select AJAX endpoint meant for admins to manage audit logs, to dump all usernames existing in the Bookstack database. This can also be used to harvest email belonging to a user because BookStack also uses the code where(`email`, `like`, `%` . $search . `%`) to search for users based on email.","aliases":["CVE-2021-4119"],"modified":"2023-11-08T04:06:54.283602Z","published":"2021-12-16T19:40:26Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2021-12-16T15:36:38Z","nvd_published_at":"2021-12-15T20:15:00Z","cwe_ids":["CWE-284"]},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4119"},{"type":"WEB","url":"https://github.com/bookstackapp/bookstack/commit/e765e618547c92f4e0b46caca6fb91f0174efd99"},{"type":"WEB","url":"https://github.com/BookStackApp/BookStack/releases/tag/v21.11.3"},{"type":"PACKAGE","url":"https://github.com/bookstackapp/bookstack"},{"type":"WEB","url":"https://huntr.dev/bounties/135f2d7d-ab0b-4351-99b9-889efac46fca"}],"affected":[{"package":{"name":"ssddanbrown/bookstack","ecosystem":"Packagist","purl":"pkg:composer/ssddanbrown/bookstack"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.11.3"}]}],"versions":["0.7.2","V0.7.5","v0.10.0","v0.11.0","v0.11.1","v0.11.2","v0.12.0","v0.12.1","v0.12.2","v0.13.0","v0.13.1","v0.14.0","v0.14.1","v0.14.2","v0.14.3","v0.15.0","v0.15.1","v0.15.2","v0.15.3","v0.16.0","v0.16.1","v0.16.2","v0.16.3","v0.17.0","v0.17.1","v0.17.2","v0.17.3","v0.17.4","v0.18.0","v0.18.1","v0.18.2","v0.18.3","v0.18.4","v0.18.5","v0.19.0","v0.20.0","v0.20.1","v0.20.2","v0.20.3","v0.21.0","v0.22.0","v0.23.0","v0.23.1","v0.23.2","v0.24.0","v0.24.1","v0.24.2","v0.24.3","v0.25.0","v0.25.1","v0.25.2","v0.25.3","v0.25.4","v0.25.5","v0.26.0","v0.26.1","v0.26.2","v0.26.3","v0.26.4","v0.27","v0.27.1","v0.27.2","v0.27.3","v0.27.4","v0.27.5","v0.28.0","v0.28.1","v0.28.2","v0.28.3","v0.29.0","v0.29.1","v0.29.2","v0.29.3","v0.30.0","v0.30.1","v0.30.2","v0.30.3","v0.30.4","v0.30.5","v0.30.6","v0.30.7","v0.31.0","v0.31.1","v0.31.2","v0.31.3","v0.31.4","v0.31.5","v0.31.6","v0.31.7","v0.31.8","v0.5.0","v0.6.0","v0.6.1","v0.6.2","v0.6.3","v0.7.0","v0.7.3","v0.7.4","v0.7.6","v0.8.0","v0.8.1","v0.8.2","v0.9.0","v0.9.1","v0.9.2","v0.9.3","v21.04","v21.04.1","v21.04.2","v21.04.3","v21.04.4","v21.04.5","v21.04.6","v21.05","v21.05.1","v21.05.2","v21.05.3","v21.05.4","v21.08","v21.08.1","v21.08.2","v21.08.3","v21.08.4","v21.08.5","v21.08.6","v21.10","v21.10.1","v21.10.2","v21.10.3","v21.11","v21.11.1","v21.11.2"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/12/GHSA-9c5c-5j4h-8q2c/GHSA-9c5c-5j4h-8q2c.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}