CVE-2026-26987

MEDIUM
2026-02-20 [email protected] GHSA-gqx7-99jw-6fpr
6.1
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 22:04 vuln.today
PoC Detected
Feb 20, 2026 - 16:32 vuln.today
Public exploit code
Patch Released
Feb 20, 2026 - 16:32 nvd
Patch available
CVE Published
Feb 20, 2026 - 02:16 nvd
MEDIUM 6.1

Tags

MySQL Snmp XSS Librenms

Description

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are vulnerable to Reflected XSS attacks via email field. This issue has been fixed in version 26.2.0.

Analysis

Reflected cross-site scripting in LibreNMS versions 25.12.0 and earlier allows unauthenticated remote attackers to inject malicious scripts via the email field, potentially compromising user sessions and enabling credential theft or malware distribution. Public exploit code exists for this vulnerability, and affected organizations should upgrade to version 26.2.0 or later immediately.

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

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Priority Score

51
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +30
POC: +20

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CVE-2026-26987 vulnerability details – vuln.today
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