{"id":"CVE-2021-35478","aliases":["EUVD-2021-22120","GHSA-9q74-9jcx-243m"],"status":"published","title":"Nagios Log Server before 2.1.9 contains Reflected XSS in the dropdown box for the alert history...","description":"Nagios Log Server before 2.1.9 contains Reflected XSS in the dropdown box for the alert history and audit log function. All parameters used for filtering are affected. This affects users who open a crafted link or third-party web page.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.76624,"percentile":0.99547,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-07-27T11:44:58Z","modified":"2026-06-17T03:57:32Z","products":[{"vendor":"nagios","product":"log_server"}],"references":[{"url":"https://www.nagios.com/downloads/nagios-log-server/change-log/","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://research.nccgroup.com/?research=Technical%20advisories","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://research.nccgroup.com/2021/07/22/technical-advisory-stored-and-reflected-xss-vulnerability-in-nagios-log-server-cve-2021-35478cve-2021-35479/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35478"},{"url":"https://github.com/advisories/GHSA-9q74-9jcx-243m"}],"sources":{"cve":[{"id":"CVE-2021-35478","description":"Nagios Log Server before 2.1.9 contains Reflected XSS in the dropdown box for the alert history and audit log function. All parameters used for filtering are affected. This affects users who open a crafted link or third-party web page.","status":"published","published":"2021-07-27T11:44:58Z","modified":"2024-08-04T00:40:46.481Z","updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-22120","description":"Nagios Log Server before 2.1.9 contains Reflected XSS in the dropdown box for the alert history and audit log function. All parameters used for filtering are affected. This affects users who open a crafted link or third-party web page.","status":"published","published":"2021-07-27T11:44:58Z","modified":"2024-08-04T00:40:46Z","updated_at":"2026-11-03T03:24:30.441845Z"}],"ghsa":[{"id":"GHSA-9q74-9jcx-243m","title":"Nagios Log Server before 2.1.9 contains Reflected XSS in the dropdown box for the alert history...","description":"Nagios Log Server before 2.1.9 contains Reflected XSS in the dropdown box for the alert history and audit log function. All parameters used for filtering are affected. This affects users who open a crafted link or third-party web page.","status":"published","published":"2022-05-24T19:09:22Z","modified":"2023-01-30T05:01:08Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:20.638842Z"}],"nvd":[{"id":"CVE-2021-35478","description":"Nagios Log Server before 2.1.9 contains Reflected XSS in the dropdown box for the alert history and audit log function. All parameters used for filtering are affected. This affects users who open a crafted link or third-party web page.","status":"published","published":"2021-07-30T14:15:17.917Z","modified":"2026-06-17T03:57:32.613Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:56.185362Z"}]}}