{"id":"CVE-2021-26804","aliases":["EUVD-2021-13591","GHSA-7qrv-wf2w-98mm"],"status":"published","title":"Insecure Permissions in Centreon Web versions 19.10.18, 20.04.8, and 20.10.2 allows remote...","description":"Insecure Permissions in Centreon Web versions 19.10.18, 20.04.8, and 20.10.2 allows remote attackers to bypass validation by changing any file extension to \".gif\", then uploading it in the \"Administration/ Parameters/ Images\" section of the application.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01189,"percentile":0.68188,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-276"],"published":"2021-05-04T16:49:02Z","modified":"2026-06-17T03:43:48Z","products":[{"vendor":"centreon","product":"centreon_web"}],"references":[{"url":"https://medium.com/%40pedro.ferreira.phf/vulnerability-affecting-some-versions-of-centreon-2b34bd6dc621","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26804"},{"url":"https://medium.com/@pedro.ferreira.phf/vulnerability-affecting-some-versions-of-centreon-2b34bd6dc621"},{"url":"https://github.com/advisories/GHSA-7qrv-wf2w-98mm"}],"sources":{"cve":[{"id":"CVE-2021-26804","description":"Insecure Permissions in Centreon Web versions 19.10.18, 20.04.8, and 20.10.2 allows remote attackers to bypass validation by changing any file extension to \".gif\", then uploading it in the \"Administration/ Parameters/ Images\" section of the application.","status":"published","published":"2021-05-04T16:49:02Z","modified":"2024-08-03T20:33:41.163Z","updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-13591","description":"Insecure Permissions in Centreon Web versions 19.10.18, 20.04.8, and 20.10.2 allows remote attackers to bypass validation by changing any file extension to \".gif\", then uploading it in the \"Administration/ Parameters/ Images\" section of the application.","status":"published","published":"2021-05-04T16:49:02Z","modified":"2024-08-03T20:33:41Z","updated_at":"2026-11-03T03:24:50.84326Z"}],"ghsa":[{"id":"GHSA-7qrv-wf2w-98mm","title":"Insecure Permissions in Centreon Web versions 19.10.18, 20.04.8, and 20.10.2 allows remote...","description":"Insecure Permissions in Centreon Web versions 19.10.18, 20.04.8, and 20.10.2 allows remote attackers to bypass validation by changing any file extension to \".gif\", then uploading it in the \"Administration/ Parameters/ Images\" section of the application.","status":"published","published":"2022-05-24T17:49:25Z","modified":"2023-01-29T05:06:09Z","cwes":["CWE-276"],"updated_at":"2026-11-02T14:45:57.703827Z"}],"nvd":[{"id":"CVE-2021-26804","description":"Insecure Permissions in Centreon Web versions 19.10.18, 20.04.8, and 20.10.2 allows remote attackers to bypass validation by changing any file extension to \".gif\", then uploading it in the \"Administration/ Parameters/ Images\" section of the application.","status":"published","published":"2021-05-04T17:15:07.627Z","modified":"2026-06-17T03:43:48.297Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:06:52.81233Z"}]}}