Nagios XI versions prior to 5.8.0 are vulnerable to stored cross-site scripting (XSS) via the My Tools page. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.
PUBLISHED5.2CWE-79
Nagios XI < 5.8.0 XSS via My Tools Page
Problem type
Affected products
Nagios
XI
< 5.8.0 - AFFECTED
References
nagios.com
https://www.nagios.com/changelog/nagios-xi/
vulncheck.com
https://www.vulncheck.com/advisories/nagios-xi-xss-via-my-tools-page
JSON source
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{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2021-47695",
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "dateUpdated": "2025-10-31T13:54:07.677Z",
    "dateReserved": "2025-10-30T15:47:16.864Z",
    "datePublished": "2025-10-30T21:54:48.701Z",
    "state": "PUBLISHED"
  },
  "containers": {
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        "shortName": "VulnCheck",
        "dateUpdated": "2025-10-30T21:54:48.701Z"
      },
      "title": "Nagios XI < 5.8.0 XSS via My Tools Page",
      "descriptions": [
        {
          "lang": "en",
          "value": "Nagios XI versions prior to 5.8.0 are vulnerable to stored cross-site scripting (XSS) via the My Tools page. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.",
          "supportingMedia": [
            {
              "type": "text/html",
              "base64": false,
              "value": "Nagios XI versions prior to 5.8.0 are vulnerable to stored cross-site scripting (XSS) via the My Tools page. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.<br>"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "Nagios",
          "product": "XI",
          "modules": [
            "Web UI – My Tools page (listing/detail renderers)"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.8.0"
            }
          ]
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')",
              "cweId": "CWE-79",
              "type": "CWE"
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          ]
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      ],
      "references": [
        {
          "url": "https://www.nagios.com/changelog/nagios-xi/",
          "tags": [
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            "patch"
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        {
          "url": "https://www.vulncheck.com/advisories/nagios-xi-xss-via-my-tools-page",
          "tags": [
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      ],
      "impacts": [
        {
          "capecId": "CAPEC-63",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-63 Cross-Site Scripting (XSS)"
            }
          ]
        }
      ],
      "metrics": [
        {
          "format": "CVSS",
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Nagios addresses this vulnerability as \"Fixed stored XSS security vulnerability in My Tools page.\"",
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              "type": "text/html",
              "base64": false,
              "value": "Nagios addresses this vulnerability as \"Fixed stored XSS security vulnerability in My Tools page.\"<br>"
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      ],
      "credits": [
        {
          "lang": "en",
          "value": "Matthew Aberegg",
          "type": "finder"
        }
      ]
    },
    "adp": [
      {
        "providerMetadata": {
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP",
          "dateUpdated": "2025-10-31T13:54:07.677Z"
        },
        "title": "CISA ADP Vulnrichment",
        "metrics": [
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  }
}