{"id":"CVE-2021-36091","aliases":["DEBIAN-CVE-2021-36091","DLA-3551-1","EUVD-2021-22723","GHSA-mxpc-p9xr-9j86","UBUNTU-CVE-2021-36091"],"status":"published","title":"Unautorized access to the calendar appointments","description":"Agents are able to list appointments in the calendars without required permissions. This issue affects: OTRS AG ((OTRS)) Community Edition: 6.0.x version 6.0.1 and later versions. OTRS AG OTRS: 7.0.x versions prior to 7.0.27.","severity":{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00698,"percentile":0.53423,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200","CWE-863"],"published":"2021-07-26T04:25:41Z","modified":"2026-08-27T23:04:05Z","fixes":[{"ecosystem":"Debian:11","package":"otrs2","fixed_in":["6.0.32-6"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:11","package":"otrs2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.32-6"}]}],"versions":["2.0.4p01-10","2.0.4p01-11","2.0.4p01-12","2.0.4p01-13","2.0.4p01-14","2.0.4p01-14.1","2.0.4p01-15","2.0.4p01-16","2.0.4p01-17","2.0.4p01-18","2.0.4p01-6","2.0.4p01-7","2.0.4p01-8","2.0.4p01-9","2.0.99beta1-1","2.0.99beta1-2","2.1.1-1","2.1.3-1","2.1.4-1","2.1.4-2","2.1.5-1","2.1.5-2","2.1.5-3","2.1.6-1","2.1.7-1","2.1.7-2","2.2.0~beta2-1","2.2.0~beta3-1","2.2.1-1","2.2.2-1","2.2.3-1","2.2.4-1","2.2.5-1","2.2.5-2","2.2.6-1","2.2.7-1","2.2.7-2","2.2.7-2lenny1","2.2.7-2lenny2","2.2.7-2lenny3","2.2.7-3","2.3.2-1","2.3.2-2","2.3.3-1","2.3.4-1","2.3.4-2","2.3.4-3","2.3.4-4","2.3.4-5","2.3.4-6","2.3.4-7","2.4.10+dfsg1-1","2.4.10+dfsg1-2","2.4.10+dfsg1-3","2.4.5-1","2.4.5-2","2.4.5-3","2.4.5-4","2.4.5-5","2.4.6-1","2.4.6-2","2.4.7+dfsg1-1","2.4.7-1","2.4.7-2","2.4.7-3","2.4.7-4","2.4.7-5","2.4.7-6","2.4.8+dfsg1-1","2.4.9+dfsg1-1","2.4.9+dfsg1-2","2.4.9+dfsg1-3","2.4.9+dfsg1-3+squeeze1","2.4.9+dfsg1-3+squeeze3","2.4.9+dfsg1-3+squeeze4","2.4.9+dfsg1-3+squeeze5","2.4.9+dfsg1-4","2.4.9+dfsg1-5","3.0.10+dfsg1-1","3.0.10+dfsg1-2","3.0.11+dfsg1-1","3.0.8+dfsg1-1","3.0.9+dfsg1-1","3.1.0~beta4+dfsg1-1","3.1.0~beta5+dfsg1-1","3.1.0~rc1+dfsg1-1","3.1.1+dfsg1-1","3.1.1+dfsg1-2","3.1.10+dfsg1-1","3.1.11+dfsg1-1","3.1.12+dfsg1-1","3.1.12+dfsg1-2","3.1.12+dfsg1-3","3.1.2+dfsg1-1","3.1.2+dfsg1-2","3.1.2+dfsg1-3","3.1.3+dfsg1-1","3.1.3+dfsg1-2","3.1.4+dfsg1-1","3.1.5+dfsg1-1","3.1.5+dfsg1-2","3.1.5+dfsg1-3","3.1.6+dfsg1-1","3.1.7+dfsg1-1","3.1.7+dfsg1-2","3.1.7+dfsg1-3","3.1.7+dfsg1-4","3.1.7+dfsg1-5","3.1.7+dfsg1-6","3.1.7+dfsg1-7","3.1.7+dfsg1-8","3.1.8+dfsg1-1","3.1.9+dfsg1-1","3.2.1+dfsg1-1","3.2.10-1","3.2.10-2","3.2.11-1","3.2.11-1~bpo70+1","3.2.12-1","3.2.2+dfsg1-1","3.2.3+dfsg1-1","3.2.4-1","3.2.5-1","3.2.6-1","3.2.6-2","3.2.7-1","3.2.7-2","3.2.8-1","3.2.9-1","3.2.9-2","3.3.1-1","3.3.10-1","3.3.11-1","3.3.18-1~deb7u1","3.3.18-1~deb7u2","3.3.18-1~deb7u3","3.3.2-1","3.3.3-1","3.3.3-2","3.3.3-3","3.3.4-1","3.3.5-1","3.3.6-1","3.3.7-1","3.3.7-2","3.3.8-1","3.3.9-1","3.3.9-2","3.3.9-3","3.3.9-3~bpo70+1","4.0.10-1","4.0.11-1","4.0.12-1","4.0.13-1","4.0.13-1~bpo8+1","4.0.5-1","4.0.5-2","4.0.6-1","4.0.7-1","4.0.7-2","4.0.8-1","4.0.9-1","5.0.1-1","5.0.1-2","5.0.10-1","5.0.10-1~bpo8+1","5.0.11-1","5.0.12-1","5.0.13-1","5.0.13-1~bpo8+1","5.0.13-2","5.0.14-1","5.0.14-1~bpo8+1","5.0.15-1","5.0.16-1","5.0.16-1~bpo8+1","5.0.17-1","5.0.18-1","5.0.19-1","5.0.2-1","5.0.20-1","5.0.21-1","5.0.21-1~bpo9+1","5.0.22-1","5.0.23-1","5.0.23-1~bpo9+1","5.0.24-1","5.0.24-1~bpo9+1","5.0.3-1","5.0.5-1","5.0.6-1","5.0.6-1~bpo8+1","5.0.7-1","5.0.8+dfsg1-1","5.0.8-1","5.0.8-1~bpo8+1","5.0.9+dfsg1-1","5.0.9+repack1-1","6.0.1-1","6.0.10-1","6.0.11-1","6.0.11-1~bpo9+1","6.0.12-1","6.0.12-1~bpo9+1","6.0.13-1","6.0.14-1","6.0.15-1","6.0.16-1","6.0.16-2","6.0.17-1","6.0.18-1","6.0.19-1","6.0.2-1","6.0.20-1","6.0.20-1~bpo10+1","6.0.21-1","6.0.22-1","6.0.23-1","6.0.23-2","6.0.24-1","6.0.24-1~bpo10+1","6.0.25-1","6.0.25-2","6.0.25-3","6.0.25-3~bpo10+1","6.0.26-1","6.0.26-1~bpo10+1","6.0.27-1","6.0.27-1~bpo10+1","6.0.28-1","6.0.28-1~bpo10+1","6.0.28-2","6.0.29-1","6.0.29-1~bpo10+1","6.0.3-1","6.0.30-1","6.0.30-1~bpo10+1","6.0.30-2","6.0.32-1","6.0.32-2","6.0.32-2~bpo10+1","6.0.32-4","6.0.32-5","6.0.32-5~bpo10+1","6.0.4-1","6.0.5-1","6.0.6-1","6.0.7-1","6.0.8-1","6.0.8-1~bpo9+1","6.0.9-1","6.0.9-1~bpo9+1"]},{"source":"osv","ecosystem":"Debian:10","package":"otrs2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.16-2+deb10u1"}]}],"versions":["2.0.4p01-10","2.0.4p01-11","2.0.4p01-12","2.0.4p01-13","2.0.4p01-14","2.0.4p01-14.1","2.0.4p01-15","2.0.4p01-16","2.0.4p01-17","2.0.4p01-18","2.0.4p01-6","2.0.4p01-7","2.0.4p01-8","2.0.4p01-9","2.0.99beta1-1","2.0.99beta1-2","2.1.1-1","2.1.3-1","2.1.4-1","2.1.4-2","2.1.5-1","2.1.5-2","2.1.5-3","2.1.6-1","2.1.7-1","2.1.7-2","2.2.0~beta2-1","2.2.0~beta3-1","2.2.1-1","2.2.2-1","2.2.3-1","2.2.4-1","2.2.5-1","2.2.5-2","2.2.6-1","2.2.7-1","2.2.7-2","2.2.7-2lenny1","2.2.7-2lenny2","2.2.7-2lenny3","2.2.7-3","2.3.2-1","2.3.2-2","2.3.3-1","2.3.4-1","2.3.4-2","2.3.4-3","2.3.4-4","2.3.4-5","2.3.4-6","2.3.4-7","2.4.10+dfsg1-1","2.4.10+dfsg1-2","2.4.10+dfsg1-3","2.4.5-1","2.4.5-2","2.4.5-3","2.4.5-4","2.4.5-5","2.4.6-1","2.4.6-2","2.4.7+dfsg1-1","2.4.7-1","2.4.7-2","2.4.7-3","2.4.7-4","2.4.7-5","2.4.7-6","2.4.8+dfsg1-1","2.4.9+dfsg1-1","2.4.9+dfsg1-2","2.4.9+dfsg1-3","2.4.9+dfsg1-3+squeeze1","2.4.9+dfsg1-3+squeeze3","2.4.9+dfsg1-3+squeeze4","2.4.9+dfsg1-3+squeeze5","2.4.9+dfsg1-4","2.4.9+dfsg1-5","3.0.10+dfsg1-1","3.0.10+dfsg1-2","3.0.11+dfsg1-1","3.0.8+dfsg1-1","3.0.9+dfsg1-1","3.1.0~beta4+dfsg1-1","3.1.0~beta5+dfsg1-1","3.1.0~rc1+dfsg1-1","3.1.1+dfsg1-1","3.1.1+dfsg1-2","3.1.10+dfsg1-1","3.1.11+dfsg1-1","3.1.12+dfsg1-1","3.1.12+dfsg1-2","3.1.12+dfsg1-3","3.1.2+dfsg1-1","3.1.2+dfsg1-2","3.1.2+dfsg1-3","3.1.3+dfsg1-1","3.1.3+dfsg1-2","3.1.4+dfsg1-1","3.1.5+dfsg1-1","3.1.5+dfsg1-2","3.1.5+dfsg1-3","3.1.6+dfsg1-1","3.1.7+dfsg1-1","3.1.7+dfsg1-2","3.1.7+dfsg1-3","3.1.7+dfsg1-4","3.1.7+dfsg1-5","3.1.7+dfsg1-6","3.1.7+dfsg1-7","3.1.7+dfsg1-8","3.1.8+dfsg1-1","3.1.9+dfsg1-1","3.2.1+dfsg1-1","3.2.10-1","3.2.10-2","3.2.11-1","3.2.11-1~bpo70+1","3.2.12-1","3.2.2+dfsg1-1","3.2.3+dfsg1-1","3.2.4-1","3.2.5-1","3.2.6-1","3.2.6-2","3.2.7-1","3.2.7-2","3.2.8-1","3.2.9-1","3.2.9-2","3.3.1-1","3.3.10-1","3.3.11-1","3.3.18-1~deb7u1","3.3.18-1~deb7u2","3.3.18-1~deb7u3","3.3.2-1","3.3.3-1","3.3.3-2","3.3.3-3","3.3.4-1","3.3.5-1","3.3.6-1","3.3.7-1","3.3.7-2","3.3.8-1","3.3.9-1","3.3.9-2","3.3.9-3","3.3.9-3~bpo70+1","4.0.10-1","4.0.11-1","4.0.12-1","4.0.13-1","4.0.13-1~bpo8+1","4.0.5-1","4.0.5-2","4.0.6-1","4.0.7-1","4.0.7-2","4.0.8-1","4.0.9-1","5.0.1-1","5.0.1-2","5.0.10-1","5.0.10-1~bpo8+1","5.0.11-1","5.0.12-1","5.0.13-1","5.0.13-1~bpo8+1","5.0.13-2","5.0.14-1","5.0.14-1~bpo8+1","5.0.15-1","5.0.16-1","5.0.16-1~bpo8+1","5.0.17-1","5.0.18-1","5.0.19-1","5.0.2-1","5.0.20-1","5.0.21-1","5.0.21-1~bpo9+1","5.0.22-1","5.0.23-1","5.0.23-1~bpo9+1","5.0.24-1","5.0.24-1~bpo9+1","5.0.3-1","5.0.5-1","5.0.6-1","5.0.6-1~bpo8+1","5.0.7-1","5.0.8+dfsg1-1","5.0.8-1","5.0.8-1~bpo8+1","5.0.9+dfsg1-1","5.0.9+repack1-1","6.0.1-1","6.0.10-1","6.0.11-1","6.0.11-1~bpo9+1","6.0.12-1","6.0.12-1~bpo9+1","6.0.13-1","6.0.14-1","6.0.15-1","6.0.16-1","6.0.16-2","6.0.2-1","6.0.3-1","6.0.4-1","6.0.5-1","6.0.6-1","6.0.7-1","6.0.8-1","6.0.8-1~bpo9+1","6.0.9-1","6.0.9-1~bpo9+1"],"bundled":32},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"otrs2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.10-1","5.0.1-1","5.0.1-2","5.0.2-1","5.0.3-1","5.0.5-1","5.0.6-1","5.0.7-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"otrs2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.23-1","5.0.24-1","6.0.1-1","6.0.2-1","6.0.3-1","6.0.4-1","6.0.5-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"otrs2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0.20-1","6.0.23-2","6.0.24-1","6.0.25-1","6.0.25-2","6.0.25-3","6.0.26-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"otrs2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0.32-6","6.1.2-1","6.2.1-1","6.2.2-2"]}],"products":[{"vendor":"otrs","product":"otrs"},{"vendor":"otrs ag","product":"((otrs)) community edition"},{"vendor":"otrs ag","product":"otrs"}],"references":[{"url":"https://otrs.com/release-notes/otrs-security-advisory-2021-14/","tags":["x_transferred","Vendor Advisory","advisory","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html","tags":["mailing-list","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36091"},{"url":"https://github.com/advisories/GHSA-mxpc-p9xr-9j86"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-36091","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-36091","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-36091","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-36091","title":"Unautorized access to the calendar appointments","description":"Agents are able to list appointments in the calendars without required permissions. This issue affects: OTRS AG ((OTRS)) Community Edition: 6.0.x version 6.0.1 and later versions. OTRS AG OTRS: 7.0.x versions prior to 7.0.27.","status":"published","published":"2021-07-26T04:25:41.82Z","modified":"2024-09-16T17:59:18.697Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:33:05.989686Z"}],"euvd":[{"id":"EUVD-2021-22723","description":"Agents are able to list appointments in the calendars without required permissions. This issue affects: OTRS AG ((OTRS)) Community Edition: 6.0.x version 6.0.1 and later versions. OTRS AG OTRS: 7.0.x versions prior to 7.0.27.","status":"published","published":"2021-07-26T04:25:41Z","modified":"2024-09-16T17:59:18Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-03T00:55:36.806318Z"}],"ghsa":[{"id":"GHSA-mxpc-p9xr-9j86","title":"Agents are able to list appointments in the calendars without required permissions. This issue...","description":"Agents are able to list appointments in the calendars without required permissions. This issue affects: OTRS AG ((OTRS)) Community Edition: 6.0.x version 6.0.1 and later versions. OTRS AG OTRS: 7.0.x versions prior to 7.0.27.","status":"published","published":"2022-05-24T19:09:14Z","modified":"2023-09-08T05:03:08Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200","CWE-863"],"updated_at":"2026-11-02T14:54:46.481792Z"}],"nvd":[{"id":"CVE-2021-36091","description":"Agents are able to list appointments in the calendars without required permissions. This issue affects: OTRS AG ((OTRS)) Community Edition: 6.0.x version 6.0.1 and later versions. OTRS AG OTRS: 7.0.x versions prior to 7.0.27.","status":"published","published":"2021-07-26T05:15:07.577Z","modified":"2026-06-17T03:58:21.79Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200","CWE-863"],"updated_at":"2026-11-02T14:06:56.185362Z"}],"osv":[{"id":"CVE-2021-36091","description":"Agents are able to list appointments in the calendars without required permissions. This issue affects: OTRS AG ((OTRS)) Community Edition: 6.0.x version 6.0.1 and later versions. OTRS AG OTRS: 7.0.x versions prior to 7.0.27.","status":"published","published":"2021-07-26T05:15:07.577Z","modified":"2026-03-14T11:01:38.060981Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:20.434873Z"},{"id":"DEBIAN-CVE-2021-36091","description":"Agents are able to list appointments in the calendars without required permissions. This issue affects: OTRS AG ((OTRS)) Community Edition: 6.0.x version 6.0.1 and later versions. OTRS AG OTRS: 7.0.x versions prior to 7.0.27.","status":"published","published":"2021-07-26T05:15:07.577Z","modified":"2026-08-27T23:04:05.045324912Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:35.233346Z"},{"id":"UBUNTU-CVE-2021-36091","description":"Agents are able to list appointments in the calendars without required permissions. This issue affects: OTRS AG ((OTRS)) Community Edition: 6.0.x version 6.0.1 and later versions. OTRS AG OTRS: 7.0.x versions prior to 7.0.27.","status":"published","published":"2021-07-26T05:15:00Z","modified":"2025-10-24T04:50:26Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N","level":"low"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:27.870979Z"},{"id":"DLA-3551-1","title":"otrs2 - security update","status":"published","published":"2023-08-31T00:00:00Z","modified":"2026-03-09T01:23:23.492308Z","updated_at":"2026-11-02T15:46:11.734021Z"}]}}