{"id":"CVE-2023-0846","aliases":["EUVD-2023-0651","GHSA-79jr-8fhm-8wv3"],"status":"published","title":"Unauthenticated, stored XSS in display of alarm reduction-key","description":"Unauthenticated, stored cross-site scripting in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian could allow an attacker access to confidential session information. Users\nshould upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4. Meridian and\nHorizon installation instructions state that they are intended for installation\nwithin an organization's private networks and should not be directly accessible\nfrom the Internet.","severity":{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00493,"percentile":0.42649,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2023-02-22T18:35:19Z","modified":"2026-10-28T10:31:46Z","fixes":[{"ecosystem":"Maven","package":"org.opennms:opennms","fixed_in":["31.0.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.opennms:opennms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"31.0.3"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.opennms:opennms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"31.0.3"}]}]}],"products":[{"vendor":"opennms","product":"horizon"},{"vendor":"opennms","product":"meridian"},{"vendor":"openstack","product":"horizon"},{"vendor":"the opennms group","product":"horizon"},{"vendor":"the opennms group","product":"meridian"}],"references":[{"url":"https://github.com/OpenNMS/opennms/pull/5506/files","tags":["x_transferred","Patch","web"]},{"url":"https://docs.opennms.com/meridian/2022/releasenotes/changelog.html#releasenotes-changelog-Meridian-2022.1.13","tags":["x_transferred","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-0846","tags":["advisory"]},{"url":"https://issues.opennms.org/browse/NMS-14877","tags":["web"]},{"url":"https://github.com/advisories/GHSA-79jr-8fhm-8wv3"},{"url":"https://github.com/OpenNMS","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/0xxx/CVE-2023-0846.json","tags":["advisory"]},{"url":"https://github.com/OpenNMS/opennms","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-0846","title":"Unauthenticated, stored XSS in display of alarm reduction-key","description":"Unauthenticated, stored cross-site scripting in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian could allow an attacker access to confidential session information. Users\nshould upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4. Meridian and\nHorizon installation instructions state that they are intended for installation\nwithin an organization's private networks and should not be directly accessible\nfrom the Internet.","status":"published","published":"2023-02-22T18:35:19.051Z","modified":"2024-08-02T05:24:34.302Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:35.256261Z"}],"euvd":[{"id":"EUVD-2023-0651","description":"Unauthenticated, stored cross-site scripting in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian could allow an attacker access to confidential session information. Users\nshould upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4. Meridian and\nHorizon installation instructions state that they are intended for installation\nwithin an organization's private networks and should not be directly accessible\nfrom the Internet.","status":"published","published":"2023-02-22T18:35:19Z","modified":"2024-08-02T05:24:34Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-03T03:50:16.011444Z"}],"ghsa":[{"id":"GHSA-79jr-8fhm-8wv3","title":"OpenNMS Horizon and Meridian vulnerable to Cross-site Scripting","description":"Unauthenticated, stored cross-site scripting in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian could allow an attacker access to confidential session information.","status":"published","published":"2023-02-22T21:30:39Z","modified":"2023-03-03T23:19:19Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:36:47.279442Z"}],"nvd":[{"id":"CVE-2023-0846","description":"Unauthenticated, stored cross-site scripting in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian could allow an attacker access to confidential session information. Users\nshould upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4. Meridian and\nHorizon installation instructions state that they are intended for installation\nwithin an organization's private networks and should not be directly accessible\nfrom the Internet.","status":"published","published":"2023-02-22T19:15:11.09Z","modified":"2026-06-17T05:26:26.513Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:47.623983Z"}],"osv":[{"id":"CVE-2023-0846","title":"Unauthenticated, stored XSS in display of alarm reduction-key","description":"Unauthenticated, stored cross-site scripting in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian could allow an attacker access to confidential session information. Users\nshould upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4. Meridian and\nHorizon installation instructions state that they are intended for installation\nwithin an organization's private networks and should not be directly accessible\nfrom the Internet.","status":"published","published":"2023-02-22T18:35:19.051Z","modified":"2026-10-28T10:31:46.065922642Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:29.487253Z"},{"id":"GHSA-79jr-8fhm-8wv3","title":"OpenNMS Horizon and Meridian vulnerable to Cross-site Scripting","description":"Unauthenticated, stored cross-site scripting in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian could allow an attacker access to confidential session information.","status":"published","published":"2023-02-22T21:30:39Z","modified":"2023-11-08T04:11:12.573034Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:40.657155Z"}]}}