{"id":"CVE-2018-18245","aliases":["DEBIAN-CVE-2018-18245","DLA-1615-1","EUVD-2018-9981","GHSA-mmcj-m9g2-2r59","MGASA-2019-0104","UBUNTU-CVE-2018-18245","openSUSE-SU-2020:0500-1","openSUSE-SU-2020:0517-1","openSUSE-SU-2024:11073-1"],"status":"published","title":"Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a...","description":"Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a SCRIPT element delivered by a modified check_load plugin to NRPE.","severity":{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0254,"percentile":0.85082,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2018-12-17T15:00:00Z","modified":"2026-10-24T10:31:03Z","fixes":[{"ecosystem":"Debian:12","package":"nagios4","fixed_in":["4.3.4-3"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"nagios4","fixed_in":["4.3.4-3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"nagios4","fixed_in":["4.3.4-3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"nagios4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.4-3"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"nagios4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.4-3"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"nagios4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.4-3"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"nagios3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.1.dfsg-2+deb8u1"}]}],"versions":["3.5.1.dfsg-2"],"bundled":5},{"source":"osv","ecosystem":"Mageia:6","package":"nagios","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-2.2.mga6"}]}],"bundled":4},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"nagios3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.1-1ubuntu4","3.5.1.dfsg-2ubuntu1","3.5.1.dfsg-2ubuntu2","3.5.1.dfsg-2.1ubuntu1","3.5.1.dfsg-2.1ubuntu1.1","3.5.1.dfsg-2.1ubuntu1.2","3.5.1.dfsg-2.1ubuntu1.3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"nagios3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.1.dfsg-2.1ubuntu8"]},{"source":"osv","ecosystem":"openSUSE:Leap 15.1","package":"nagios","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.5-lp151.5.4.1"}]}],"bundled":5},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP1","package":"nagios","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.5-bp151.4.3.1"}]}],"bundled":5},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"nagios","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.6-2.5"}]}],"bundled":17}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"nagios","product":"nagios_core"}],"references":[{"url":"https://lists.debian.org/debian-lts-announce/2018/12/msg00014.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://herolab.usd.de/wp-content/uploads/sites/4/2018/12/usd20180026.txt","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00014.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00022.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-18245"},{"url":"https://github.com/advisories/GHSA-mmcj-m9g2-2r59"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-18245","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2019-0104.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=24290","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/3EGOZ3JA6TL3YUZ3XWYQ47OYQAJTWOTL/","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2018-18245","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-18245","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/HKTKWPRP5BSNBXHHJ3JC2CHRRZALRC26/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1028975","tags":["report"]},{"url":"https://bugzilla.suse.com/1119832","tags":["report"]},{"url":"https://bugzilla.suse.com/1156309","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2018-13441","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-13457","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-13458","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-18245","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-3698","tags":["web"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/G5J75GK25DTTK4SXS4VCSBZ3KBQ2JPAU/","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2006-2162","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-5803","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2008-4796","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-1523","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-2214","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4214","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-7108","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-1878","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-0726","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-6209","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-8641","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9566","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-12847","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-13977","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2018-18245","description":"Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a SCRIPT element delivered by a modified check_load plugin to NRPE.","status":"published","published":"2018-12-17T15:00:00Z","modified":"2024-08-05T11:01:14.898Z","updated_at":"2026-11-02T14:35:11.799349Z"}],"euvd":[{"id":"EUVD-2018-9981","description":"Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a SCRIPT element delivered by a modified check_load plugin to NRPE.","status":"published","published":"2018-12-17T15:00:00Z","modified":"2024-08-05T11:01:14Z","updated_at":"2026-11-03T02:39:36.74767Z"}],"ghsa":[{"id":"GHSA-mmcj-m9g2-2r59","title":"Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a...","description":"Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a SCRIPT element delivered by a modified check_load plugin to NRPE.","status":"published","published":"2022-05-13T01:27:25Z","modified":"2023-02-01T05:07:53Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:50:37.729708Z"}],"nvd":[{"id":"CVE-2018-18245","description":"Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a SCRIPT element delivered by a modified check_load plugin to NRPE.","status":"published","published":"2018-12-17T15:29:00.327Z","modified":"2026-06-17T01:46:52.9Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/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":"2026-11-02T14:04:50.99633Z"}],"osv":[{"id":"CVE-2018-18245","description":"Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a SCRIPT element delivered by a modified check_load plugin to NRPE.","status":"published","published":"2018-12-17T15:29:00.327Z","modified":"2026-10-24T10:31:03.409900315Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:08.834469Z"},{"id":"DEBIAN-CVE-2018-18245","description":"Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a SCRIPT element delivered by a modified check_load plugin to NRPE.","status":"published","published":"2018-12-17T15:29:00.327Z","modified":"2026-10-23T18:04:47.119113209Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:30.57382Z"},{"id":"UBUNTU-CVE-2018-18245","description":"Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a SCRIPT element delivered by a modified check_load plugin to NRPE.","status":"published","published":"2018-12-17T15:29:00Z","modified":"2025-10-24T04:47:14Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:17.496046Z"},{"id":"DLA-1615-1","title":"nagios3 - security update","status":"published","published":"2018-12-24T00:00:00Z","modified":"2026-03-09T01:18:24.058758Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"MGASA-2019-0104","title":"Updated nagios packages fix security vulnerability","description":"A flaw was found in Nagios Core version 4.4.1 and earlier. The qh_help\nfunction is prone to a NULL pointer dereference vulnerability, which allows\nattacker to cause a local denial-of-service condition by sending a crafted\npayload to the listening UNIX socket (CVE-2018-13441).\n\nA flaw was found in Nagios Core version 4.4.1 and earlier. The qh_echo\nfunction is prone to a NULL pointer dereference vulnerability, which allows\nattacker to cause a local denial-of-service condition by sending a crafted\npayload to the listening UNIX socket (CVE-2018-13457).\n\nA flaw was found in Nagios Core version 4.4.1 and earlier. The qh_core\nfunction is prone to a NULL pointer dereference vulnerability, which allows\nattacker to cause a local denial-of-service condition by sending a crafted\npayload to the listening UNIX socket (CVE-2018-13458).\n\nA cross-site scripting (XSS) vulnerability has been discovered in Nagios\nCore. This vulnerability allows attackers to place malicious JavaScript\ncode into the web frontend through manipulation of plugin output. In order\nto do this the attacker needs to be able to manipulate the output returned\nby nagios checks, e.g. by replacing a plugin on one of the monitored\nendpoints. Execution of the payload then requires that an authenticated\nuser creates an alert summary report which contains the corresponding\noutput (CVE-2018-18245).\n","status":"published","published":"2019-03-07T16:34:45Z","modified":"2026-04-16T04:41:44.022906898Z","updated_at":"2026-11-02T15:49:40.793816Z"},{"id":"openSUSE-SU-2020:0500-1","title":"Security update for nagios","description":"This update for nagios to version 4.4.5 fixes the following issues:\n\n- CVE-2019-3698: Symbolic link following vulnerability in the cronjob allows \n  local attackers to cause cause DoS or potentially escalate privileges. (boo#1156309)\n- CVE-2018-18245: Fixed XSS vulnerability in Alert Summary report (boo#1119832)\n- CVE-2018-13441, CVE-2018-13458, CVE-2018-13457: Fixed a few denial of service \n  vulnerabilities caused by null pointer dereference (boo#1101293, boo#1101289, boo#1101290).\n","status":"published","published":"2020-04-11T10:16:04Z","modified":"2026-02-04T03:01:10.13453Z","updated_at":"2026-11-02T16:58:31.152112Z"},{"id":"openSUSE-SU-2020:0517-1","title":"Security update for nagios","description":"This update for nagios to version 4.4.5 fixes the following issues:\n\n- CVE-2019-3698: Symbolic link following vulnerability in the cronjob allows \n  local attackers to cause cause DoS or potentially escalate privileges. (boo#1156309)\n- CVE-2018-18245: Fixed XSS vulnerability in Alert Summary report (boo#1119832)\n- CVE-2018-13441, CVE-2018-13458, CVE-2018-13457: Fixed a few denial of service \n  vulnerabilities caused by null pointer dereference (boo#1101293, boo#1101289, boo#1101290).\n\nThis update was imported from the openSUSE:Leap:15.1:Update update project.","status":"published","published":"2020-04-14T16:11:03Z","modified":"2025-05-07T18:10:02.94632Z","updated_at":"2026-11-02T16:58:31.152112Z"},{"id":"openSUSE-SU-2024:11073-1","title":"nagios-4.4.6-2.5 on GA media","description":"These are all security issues fixed in the nagios-4.4.6-2.5 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:08:19.000922Z","updated_at":"2026-11-02T16:58:34.894275Z"}]}}