{"schemaVersion":3,"id":"CVE-2021-25933","aliases":["GHSA-jjhw-5mxp-2g2q"],"status":"published","duplicateOf":null,"title":null,"description":"In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through meridian-foundation-2020.1.6-1 are vulnerable to Stored Cross-Site Scripting, since the function `validateFormInput()` performs improper validation checks on the input sent to the `groupName` and `groupComment` parameters. Due to this flaw, an authenticated attacker could inject arbitrary script and trick other admin users into downloading malicious files which can cause severe damage to the organization using opennms.","dates":{"published":"2021-05-20T14:59:24.000Z","modified":"2025-04-30T20:22:32.622Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.8,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":4.8,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Maven","score":4.8,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","exploitability":4.4,"impact":4.5,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":4.8,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":3.5,"severity":"low","vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01043,"percentile":0.63786,"severity":"low","asOf":"2026-10-22T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-22T00:00:00.000Z","baselineScore":0.01043},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.01043,"percentile":0.63786}],"last30":[{"date":"2026-09-22T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01043,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.01043,"percentile":0.63786}]},"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":[{"id":"REF_D1DC55637CAAB777","name":"Exploit Reference (whitesourcesoftware.com)","source":"reference","url":"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25933","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","description":"The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/79.html"}],"affected":[{"vendor":"org.opennms","product":"opennms","name":"org.opennms:opennms","label":"opennms","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.opennms/opennms","purlType":"maven","versions":[{"text":"≥ 1.0.0, < 27.1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.0.0, < 27.1.1","eol":null,"hubHref":null},{"vendor":"opennms","product":"horizon","name":"horizon","label":"horizon","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 1.0, < 27.1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.0, < 27.1.1","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":"≥ 2015.1.0, < 2019.1.19","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2020.1.0, < 2020.1.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2015.1.0, < 2019.1.19 | ≥ 2020.1.0, < 2020.1.7","eol":null,"hubHref":"/vendor/opennms/meridian"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/OpenNMS/opennms/commit/eb08b5ed4c5548f3e941a1f0d0363ae4439fa98c","label":"github.com/OpenNMS/opennms/commit/eb08b5ed4c5548f3e941a1f0d0363ae4439fa98c","hostname":"github.com","tags":["X Refsource MISC","WEB","Patch","Third Party Advisory"]},{"url":"https://github.com/OpenNMS/opennms/commit/f3ebfa3da5352b4d57f238b54c6db315ad99f10e","label":"github.com/OpenNMS/opennms/commit/f3ebfa3da5352b4d57f238b54c6db315ad99f10e","hostname":"github.com","tags":["X Refsource MISC","WEB","Patch","Third Party Advisory"]},{"url":"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25933","label":"www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25933","hostname":"www.whitesourcesoftware.com","tags":["X Refsource MISC","WEB","Exploit","Third Party Advisory"]},{"url":"https://github.com/OpenNMS/opennms/commit/8a97e6869d6e49da18b208c837438ace80049c01%2C","label":"github.com/OpenNMS/opennms/commit/8a97e6869d6e49da18b208c837438ace80049c01%2C","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-25933","label":"nvd.nist.gov/vuln/detail/CVE-2021-25933","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/OpenNMS/opennms/commit/8a97e6869d6e49da18b208c837438ace80049c01,","label":"github.com/OpenNMS/opennms/commit/8a97e6869d6e49da18b208c837438ace80049c01,","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":"2021-05-20T14:59:24.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-04-30T20:22:32.622Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":29,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T16:37:45.183Z","stale":false,"partial":false}}