CVE-2026-26987 (GCVE-0-2026-26987)

Vulnerability from cvelistv5 – Published: 2026-02-20 01:11 – Updated: 2026-02-20 01:11
VLAI?
Title
LibreNMS affected by reflected XSS via email field
Summary
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.
Severity ?
5.3 (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
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
librenms librenms Affected: < 26.2.0
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          "versions": [
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              "status": "affected",
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            }
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      ],
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            "privilegesRequired": "NONE",
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            "subConfidentialityImpact": "LOW",
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          }
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      "problemTypes": [
        {
          "descriptions": [
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              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-20T01:11:13.925Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fpr",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fpr"
        },
        {
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          "tags": [
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        },
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          "tags": [
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        },
        {
          "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-gqx7-99jw-6fpr",
        "discovery": "UNKNOWN"
      },
      "title": "LibreNMS affected by reflected XSS via email field"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-26987",
    "datePublished": "2026-02-20T01:11:13.925Z",
    "dateReserved": "2026-02-17T01:41:24.606Z",
    "dateUpdated": "2026-02-20T01:11:13.925Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.