{"api_version":"1","generated_at":"2026-04-22T16:04:05+00:00","cve":"CVE-2023-0846","urls":{"html":"https://cve.report/CVE-2023-0846","api":"https://cve.report/api/cve/CVE-2023-0846.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-0846","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-0846"},"summary":{"title":"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 should upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4. Meridian and Horizon installation instructions state that they are intended for installation within an organization's private networks and should not be directly accessible from the Internet.","state":"PUBLIC","assigner":"security@opennms.com","published_at":"2023-02-22 19:15:00","updated_at":"2023-11-07 04:01:00"},"problem_types":["CWE-79"],"metrics":[],"references":[{"url":"https://github.com/OpenNMS/opennms/pull/5506/files","name":"https://github.com/OpenNMS/opennms/pull/5506/files","refsource":"MISC","tags":[],"title":"NMS-14877: Fixed XSS in display of alarm reduction-key by christianpape · Pull Request #5506 · OpenNMS/opennms · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://docs.opennms.com/meridian/2022/releasenotes/changelog.html#releasenotes-changelog-Meridian-2022.1.13","name":"https://docs.opennms.com/meridian/2022/releasenotes/changelog.html#releasenotes-changelog-Meridian-2022.1.13","refsource":"MISC","tags":[],"title":"Changelog","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-0846","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-0846","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"846","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"opennms","cpe5":"horizon","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"846","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"opennms","cpe5":"meridian","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-0846","ASSIGNER":"security@opennms.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"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 should upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4. Meridian and Horizon installation instructions state that they are intended for installation within an organization's private networks and should not be directly accessible from the Internet."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","cweId":"CWE-79"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"The OpenNMS Group ","product":{"product_data":[{"product_name":"Horizon","version":{"version_data":[{"version_affected":"<","version_name":"26.1.0","version_value":"31.0.4"}]}}]}},{"vendor_name":"The OpenNMS Group","product":{"product_data":[{"product_name":"Meridian","version":{"version_data":[{"version_value":"not down converted","x_cve_json_5_version_data":{"versions":[{"lessThan":"2020.1.32","status":"affected","version":"2020.1.0","versionType":"git"},{"lessThan":"2021.1.24","status":"affected","version":"2021.1.0","versionType":"git"},{"lessThan":"2022.1.13","status":"affected","version":"2022.1.0","versionType":"git"},{"status":"unaffected","version":"2023.1.0"}],"defaultStatus":"unaffected"}}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/OpenNMS/opennms/pull/5506/files","refsource":"MISC","name":"https://github.com/OpenNMS/opennms/pull/5506/files"},{"url":"https://docs.opennms.com/meridian/2022/releasenotes/changelog.html#releasenotes-changelog-Meridian-2022.1.13","refsource":"MISC","name":"https://docs.opennms.com/meridian/2022/releasenotes/changelog.html#releasenotes-changelog-Meridian-2022.1.13"}]},"generator":{"engine":"Vulnogram 0.1.0-dev"},"source":{"discovery":"EXTERNAL"},"solution":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"
Upgrade to a newer version of Meridian or Horizon. Or change the details.jsp file as follows: 


Change: 
<th class=\"col-md-1\">Reduction&nbsp;Key</th>
        <td class=\"col-md-11\" colspan=\"3\">
            <% if (alarm.getReductionKey() != null) {%>
            <%=alarm.getReductionKey()%>
            <% } else {%>
            &nbsp;
            <% }%>

To:
<th class=\"col-md-1\">Reduction&nbsp;Key</th>
        <td class=\"col-md-11\" colspan=\"3\">
            <% if (alarm.getReductionKey() != null) {%>
            <%=WebSecurityUtils.sanitizeString(alarm.getReductionKey())%>
            <% } else {%>
            &nbsp;
            <% }%>

https://github.com/OpenNMS/opennms/pull/5506/files

"}],"value":" \n https://github.com/OpenNMS/opennms/pull/5506/files Upgrade to a newer version of Meridian or Horizon. Or change the details.jsp file as follows: \n\n\nChange: \nReduction Key\n        \n            <% if (alarm.getReductionKey() != null) {%>\n            <%=alarm.getReductionKey()%>\n            <% } else {%>\n             \n            <% }%>\n\nTo:\nReduction Key\n        \n            <% if (alarm.getReductionKey() != null) {%>\n            <%=WebSecurityUtils.sanitizeString(alarm.getReductionKey())%>\n            <% } else {%>\n             \n            <% }%>\n\n https://github.com/OpenNMS/opennms/pull/5506/files\n https://github.com/OpenNMS/opennms/pull/5506/files \n"}],"credits":[{"lang":"en","value":"Stefan Schiller (SonarSource)"}],"impact":{"cvss":[{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"NONE","baseScore":6.7,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","version":"3.1"}]}},"nvd":{"publishedDate":"2023-02-22 19:15:00","lastModifiedDate":"2023-11-07 04:01:00","problem_types":["CWE-79"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":2.7}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:opennms:horizon:*:*:*:*:*:*:*:*","versionEndExcluding":"31.0.4","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:*","versionEndExcluding":"2023.1.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}