LibreNMS affected by reflected XSS via email field_CVE-2026-26987

5.3 / 10

MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

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.

Basic Information

ID CVE-2026-26987

Source GitHub_M

Published Feb 20, 2026 at 01:11

Affected Product

Vendor librenms

Product librenms

Version < 26.2.0

Affected Versions librenms librenms < 26.2.0

CWE Classification

CWE-79

References

{
    "lastseen": "",
    "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.",
    "published": "2026-02-20T01:11:13.925Z",
    "modified": "2026-02-20T01:11:13.925Z",
    "type": "cve",
    "title": "LibreNMS affected by reflected XSS via email field",
    "source": "GitHub_M",
    "references": "https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fpr\nhttps://github.com/librenms/librenms/pull/19038\nhttps://github.com/librenms/librenms/commit/8e626b38ef92e240532cdac2ac7e38706a71208b\nhttps://github.com/librenms/librenms/releases/tag/26.2.0",
    "id": "CVE-2026-26987",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "librenms librenms < 26.2.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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            "privilegesRequired": "",
            "userInteraction": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "librenms",
    "version": "< 26.2.0",
    "vendor": "librenms",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
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    "ai_score": 0
}