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CVE-2020-6586

Status: ModifiedMedium (5.4)—
Severity5.4Medium · CVSS 3.1
Exploitation probability19 %higher than 97% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Nagios Log Server 2.1.3 allows XSS by visiting /profile and entering a crafted name field that is mishandled on the /admin/users page. Any malicious user with limited access can store an XSS payload in his Name. When any admin views this, the XSS is triggered.

CVSS

Base score
5.4
Version
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
19 %
Percentile among all scored CVEs
97
Score date
11/4/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Nagios — Nagios

CWEs

References

Show 6 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2020-6586",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.3
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
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  ],
  "published": "2020-03-16T16:15:14.517",
  "references": [
    {
      "url": "https://assets.nagios.com/downloads/nagios-log-server/CHANGES.TXT",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://medium.com/%40fixitt6/multiple-vulnerabilities-in-nagios-log-server-2-1-3-af7c160edc60",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.nagios.com/products/nagios-log-server/",
      "tags": [
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      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://assets.nagios.com/downloads/nagios-log-server/CHANGES.TXT",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://medium.com/%40fixitt6/multiple-vulnerabilities-in-nagios-log-server-2-1-3-af7c160edc60",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.nagios.com/products/nagios-log-server/",
      "tags": [
        "Product"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nagios Log Server 2.1.3 allows XSS by visiting /profile and entering a crafted name field that is mishandled on the /admin/users page. Any malicious user with limited access can store an XSS payload in his Name. When any admin views this, the XSS is triggered."
    },
    {
      "lang": "es",
      "value": "Nagios Log Server versión 2.1.3, permite un ataque de tipo XSS al visitar /profile e ingresar un campo name diseñado que se maneja inapropiadamente en la página /admin/users. Cualquier usuario malicioso con acceso limitado puede almacenar una carga útil de tipo XSS en su . Cuando cualquier administrador visualiza esto, es desencadenado el ataque de tipo XSS."
    }
  ],
  "lastModified": "2026-06-17T03:23:39.190",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:nagios:nagios:2.1.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "750FFD82-3737-458C-941C-5E2864DEFB76"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}