CVE-2026-27016 (GCVE-0-2026-27016)
Vulnerability from cvelistv5
Published
2026-02-20 01:34
Modified
2026-02-20 15:34
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
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.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-27016",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-20T15:26:32.832016Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-20T15:34:34.942Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "librenms",
"vendor": "librenms",
"versions": [
{
"status": "affected",
"version": "\u003e= 24.10.0, \u003c 26.2.0"
}
]
}
],
"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."
}
],
"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"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-116",
"description": "CWE-116: Improper Encoding or Escaping of Output",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-20T01:34:11.241Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"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"
}
],
"source": {
"advisory": "GHSA-fqx6-693c-f55g",
"discovery": "UNKNOWN"
},
"title": "LibreNMS has Stored XSS in Custom OID - unit parameter missing strip_tags()"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-27016",
"datePublished": "2026-02-20T01:34:11.241Z",
"dateReserved": "2026-02-17T03:08:23.490Z",
"dateUpdated": "2026-02-20T15:34:34.942Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-27016\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-02-20T15:26:32.832016Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-02-20T15:26:34.413Z\"}}], \"cna\": {\"title\": \"LibreNMS has Stored XSS in Custom OID - unit parameter missing strip_tags()\", \"source\": {\"advisory\": \"GHSA-fqx6-693c-f55g\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 5.4, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"librenms\", \"product\": \"librenms\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 24.10.0, \u003c 26.2.0\"}]}], \"references\": [{\"url\": \"https://github.com/librenms/librenms/security/advisories/GHSA-fqx6-693c-f55g\", \"name\": \"https://github.com/librenms/librenms/security/advisories/GHSA-fqx6-693c-f55g\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/librenms/librenms/pull/19040\", \"name\": \"https://github.com/librenms/librenms/pull/19040\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/librenms/librenms/commit/3bea263e02441690c01dea7fa3fe6ffec94af335\", \"name\": \"https://github.com/librenms/librenms/commit/3bea263e02441690c01dea7fa3fe6ffec94af335\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/librenms/librenms/releases/tag/26.2.0\", \"name\": \"https://github.com/librenms/librenms/releases/tag/26.2.0\", \"tags\": [\"x_refsource_MISC\"]}], \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-116\", \"description\": \"CWE-116: Improper Encoding or Escaping of Output\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-02-20T01:34:11.241Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-27016\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-20T15:34:34.942Z\", \"dateReserved\": \"2026-02-17T03:08:23.490Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-02-20T01:34:11.241Z\", \"assignerShortName\": \"GitHub_M\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…