{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-84189", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-01T10:51:59.728Z", "datePublished": "2026-09-01T11:33:54.590Z", "dateUpdated": "2026-10-08T15:25:42.828Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-08T15:25:42.828Z" }, "datePublic": "2026-08-04T00:00:00.000Z", "title": "LibreNMS before 26.7.0 Stored XSS via Oxidized API", "descriptions": [ { "lang": "en", "value": "LibreNMS through 26.4.0 renders JSON fields (name, ip, model, author, commit message) returned by the admin-configurable Oxidized integration URL (oxidized.url) into the device showconfig page without applying htmlspecialchars(). An administrator who points the Oxidized URL at an attacker-controlled server (SSRF) can cause it to return malicious JSON, resulting in stored/persistent cross-site scripting affecting all users who view any device's showconfig tab. Fixed in 26.7.0." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "cweId": "CWE-79", "type": "CWE" } ] } ], "affected": [ { "vendor": "librenms", "product": "librenms", "defaultStatus": "unaffected", "versions": [ { "version": "0", "status": "affected", "versionType": "semver", "lessThan": "26.7.0" }, { "version": "26.7.0", "status": "unaffected", "versionType": "semver" } ], "packageURL": "pkg:composer/librenms/librenms" } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.7.0" } ] } ] } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "baseScore": 9.2, "baseSeverity": "CRITICAL" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH" } } ], "references": [ { "url": "https://github.com/librenms/librenms/security/advisories/GHSA-7gww-x7fh-jf9j", "tags": [ "vendor-advisory" ], "name": "GitHub Security Advisory (GHSA-7gww-x7fh-jf9j)" }, { "name": "VulnCheck Advisory: LibreNMS before 26.7.0 Stored XSS via Oxidized API", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/librenms-before-26.7.0-stored-xss-via-oxidized-api" } ], "credits": [ { "lang": "en", "value": "k1bana", "type": "reporter" } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "references": [ { "url": "https://github.com/librenms/librenms/security/advisories/GHSA-7gww-x7fh-jf9j", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-04T01:50:21.295441Z", "id": "CVE-2026-84189", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-04T02:34:28.628Z" } } ] } }