{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-27016", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-02-17T03:08:23.490Z", "datePublished": "2026-02-20T01:34:11.241Z", "dateUpdated": "2026-02-20T01:34:11.241Z"}, "containers": {"cna": {"title": "LibreNMS has Stored XSS in Custom OID - unit parameter missing strip_tags()", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-116", "lang": "en", "description": "CWE-116: Improper Encoding or Escaping of Output", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/librenms/librenms/security/advisories/GHSA-fqx6-693c-f55g", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/librenms/librenms/security/advisories/GHSA-fqx6-693c-f55g"}, {"name": "https://github.com/librenms/librenms/pull/19040", "tags": ["x_refsource_MISC"], "url": "https://github.com/librenms/librenms/pull/19040"}, {"name": "https://github.com/librenms/librenms/commit/3bea263e02441690c01dea7fa3fe6ffec94af335", "tags": ["x_refsource_MISC"], "url": "https://github.com/librenms/librenms/commit/3bea263e02441690c01dea7fa3fe6ffec94af335"}, {"name": "https://github.com/librenms/librenms/releases/tag/26.2.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/librenms/librenms/releases/tag/26.2.0"}], "affected": [{"vendor": "librenms", "product": "librenms", "versions": [{"version": ">= 24.10.0, < 26.2.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-02-20T01:34:11.241Z"}, "descriptions": [{"lang": "en", "value": "LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 24.10.0 through 26.1.1 are vulnerable to Stored XSS via the unit parameter in Custom OID. The Custom OID functionality lacks strip_tags() sanitization while other fields (name, oid, datatype) are sanitized. The unsanitized value is stored in the database and rendered without HTML escaping. This issue is fixed in version 26.2.0."}], "source": {"advisory": "GHSA-fqx6-693c-f55g", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 24.10.0 through 26.1.1 are vulnerable to Stored XSS via the unit parameter in Custom OID. The Custom OID functionality lacks strip_tags() sanitization while other fields (name, oid, datatype) are sanitized. The unsanitized value is stored in the database and rendered without HTML escaping. This issue is fixed in version 26.2.0."}], "id": "CVE-2026-27016", "lastModified": "2026-02-20T02:16:55.140", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-02-20T02:16:55.140", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/librenms/librenms/commit/3bea263e02441690c01dea7fa3fe6ffec94af335"}, {"source": "security-advisories@github.com", "url": "https://github.com/librenms/librenms/pull/19040"}, {"source": "security-advisories@github.com", "url": "https://github.com/librenms/librenms/releases/tag/26.2.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/librenms/librenms/security/advisories/GHSA-fqx6-693c-f55g"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-116"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-02-20T09:52:57.195675+00:00", "updated": "2026-02-20T09:52:57.195756+00:00", "vendors": ["librenms", "librenms$PRODUCT$librenms"]}