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CVE Vulnerability Details :
CVE-2026-27016
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-20 Feb, 2026 | 01:34
Updated At-20 Feb, 2026 | 15:34
Rejected At-
▼CVE Numbering Authority (CNA)
LibreNMS has Stored XSS in Custom OID - unit parameter missing strip_tags()

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.

Affected Products
Vendor
LibreNMSlibrenms
Product
librenms
Versions
Affected
  • >= 24.10.0, < 26.2.0
Problem Types
TypeCWE IDDescription
CWECWE-79CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWECWE-116CWE-116: Improper Encoding or Escaping of Output
Type: CWE
CWE ID: CWE-79
Description: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Type: CWE
CWE ID: CWE-116
Description: CWE-116: Improper Encoding or Escaping of Output
Metrics
VersionBase scoreBase severityVector
3.15.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/librenms/librenms/security/advisories/GHSA-fqx6-693c-f55g
x_refsource_CONFIRM
https://github.com/librenms/librenms/pull/19040
x_refsource_MISC
https://github.com/librenms/librenms/commit/3bea263e02441690c01dea7fa3fe6ffec94af335
x_refsource_MISC
https://github.com/librenms/librenms/releases/tag/26.2.0
x_refsource_MISC
Hyperlink: https://github.com/librenms/librenms/security/advisories/GHSA-fqx6-693c-f55g
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/librenms/librenms/pull/19040
Resource:
x_refsource_MISC
Hyperlink: https://github.com/librenms/librenms/commit/3bea263e02441690c01dea7fa3fe6ffec94af335
Resource:
x_refsource_MISC
Hyperlink: https://github.com/librenms/librenms/releases/tag/26.2.0
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found