{"schemaVersion":3,"id":"CVE-2023-0871","aliases":["GHSA-2qc8-r663-v864"],"status":"published","duplicateOf":null,"title":null,"description":"XXE injection in /rtc/post/ endpoint in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms is vulnerable to XML external entity (XXE) injection, which can be used for instance to force Horizon to make arbitrary HTTP requests to internal and external services. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 or newer. 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. OpenNMS thanks Erik Wynter and Moshe Apelbaum for reporting this issue.","dates":{"published":"2023-08-11T16:13:50.714Z","modified":"2024-10-01T19:13:29.380Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.1,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.4,"severity":"medium","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Maven","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L","exploitability":7.2,"impact":8.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.1,"severity":"medium","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00547,"percentile":0.4508,"severity":"low","asOf":"2026-10-22T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-22T00:00:00.000Z","baselineScore":0.00547},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00547,"percentile":0.4508}],"last30":[{"date":"2026-09-22T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00547,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00547,"percentile":0.4508}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-611","name":"Improper Restriction of XML External Entity Reference","description":"The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/611.html"}],"affected":[{"vendor":"org.opennms.core","product":"org.opennms.core.xml","name":"org.opennms.core:org.opennms.core.xml","label":"org.opennms.core.xml","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.opennms.core/org.opennms.core.xml","purlType":"maven","versions":[{"text":"≥ 31.0.8, < 32.0.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 31.0.8, < 32.0.2","eol":null,"hubHref":null},{"vendor":"opennms","product":"horizon","name":"horizon","label":"horizon","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 32.0.0, < 32.0.2","noFixRecorded":false,"fixedIn":null},{"text":"31.0.8","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 32.0.0, < 32.0.2 | 31.0.8","eol":{"isEol":null,"eolDate":null,"matchMethod":"name_exact","cycle":null,"product":{"name":"horizon","label":"Omnissa Horizon","category":"app"}},"hubHref":"/vendor/opennms/horizon"},{"vendor":"opennms","product":"meridian","name":"meridian","label":"meridian","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 2020.0.0, < 2020.1.38","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2021.0.0, < 2021.1.30","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2022.1.0, < 2022.1.9","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2023.0.0, < 2023.1.6","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2020.0.0, < 2020.1.38 | ≥ 2021.0.0, < 2021.1.30 | ≥ 2022.1.0, < 2022.1.9 | ≥ 2023.0.0, < 2023.1.6","eol":null,"hubHref":"/vendor/opennms/meridian"},{"vendor":"the opennms group","product":"horizon","name":"Horizon","label":"horizon","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 31.0.8, < 32.0.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 31.0.8, < 32.0.2","eol":{"isEol":null,"eolDate":null,"matchMethod":"name_exact","cycle":null,"product":{"name":"horizon","label":"Omnissa Horizon","category":"app"}},"hubHref":"/vendor/the_opennms_group/horizon"},{"vendor":"the opennms group","product":"meridian","name":"Meridian","label":"meridian","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 2023.0.0, < 2023.1.6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2022.0.0, < 2022.1.19","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2021.0.0, < 2021.1.30","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2020.0.0, < 2020.1.38","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2023.0.0, < 2023.1.6 | ≥ 2022.0.0, < 2022.1.19 | ≥ 2021.0.0, < 2021.1.30 | ≥ 2020.0.0, < 2020.1.38","eol":null,"hubHref":"/vendor/the_opennms_group/meridian"}],"affectedCount":5,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/OpenNMS/opennms/pull/6355","label":"github.com/OpenNMS/opennms/pull/6355","hostname":"github.com","tags":["WEB","Patch"]},{"url":"https://docs.opennms.com/horizon/32/releasenotes/changelog.html","label":"docs.opennms.com/horizon/32/releasenotes/changelog.html","hostname":"docs.opennms.com","tags":["WEB","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-0871","label":"nvd.nist.gov/vuln/detail/CVE-2023-0871","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/OpenNMS/opennms/commit/5a3b0b62e0c612c9e2aa2c91c847abec71d767d5","label":"github.com/OpenNMS/opennms/commit/5a3b0b62e0c612c9e2aa2c91c847abec71d767d5","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/OpenNMS/opennms","label":"github.com/OpenNMS/opennms","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2023-08-11T16:13:50.714Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-10-01T19:13:29.380Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":25,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T15:18:19.822Z","stale":false,"partial":false}}