CVE-2026-7186 (GCVE-0-2026-7186)

Vulnerability from cvelistv5 – Published: 2026-06-08 12:05 – Updated: 2026-06-08 13:15
VLAI
Title
Fix stored XSS in URL dashboard widget via dangerous URI schemes
Summary
Stored cross-site scripting in the URL dashboard widget in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows a user with dashboard editing permissions to store a URL with a dangerous URI scheme such as javascript: that executes scripts in other users' browsers when they view the dashboard.
Severity
8.5 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 13:15 UTC
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://checkmk.com/werk/17991 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0p5 (semver)
Affected: 2.4.0 , < 2.4.0p31 (semver)
Affected: 2.3.0 , < 2.3.0p48 (semver)
Affected: 2.2.0 (semver)
    cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
    cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
    cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
    cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-7186",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-08T13:15:39.137366Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-08T13:15:47.369Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Checkmk",
          "vendor": "Checkmk GmbH",
          "versions": [
            {
              "lessThan": "2.5.0p5",
              "status": "affected",
              "version": "2.5.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.4.0p31",
              "status": "affected",
              "version": "2.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.3.0p48",
              "status": "affected",
              "version": "2.3.0",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "2.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "2.5.0p5",
                  "versionStartIncluding": "2.5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "2.4.0p31",
                  "versionStartIncluding": "2.4.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "2.3.0p48",
                  "versionStartIncluding": "2.3.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Stored cross-site scripting in the URL dashboard widget in Checkmk \u003c2.5.0p5, \u003c2.4.0p31, \u003c2.3.0p48, and all 2.2.0 versions allows a user with dashboard editing permissions to store a URL with a dangerous URI scheme such as javascript: that executes scripts in other users\u0027 browsers when they view the dashboard."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-592",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-592: Stored XSS"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N",
            "version": "4.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-08T12:05:28.554Z",
        "orgId": "f7d6281c-4801-44ce-ace2-493291dedb0f",
        "shortName": "Checkmk"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://checkmk.com/werk/17991"
        }
      ],
      "title": "Fix stored XSS in URL dashboard widget via dangerous URI schemes",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f7d6281c-4801-44ce-ace2-493291dedb0f",
    "assignerShortName": "Checkmk",
    "cveId": "CVE-2026-7186",
    "datePublished": "2026-06-08T12:05:28.554Z",
    "dateReserved": "2026-04-27T12:54:14.627Z",
    "dateUpdated": "2026-06-08T13:15:47.369Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-7186",
      "date": "2026-10-03",
      "epss": "0.00231",
      "percentile": "0.12669"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-7186",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-06-08T13:15:39.137366Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-06-08T13:15:41.514Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Checkmk",
              "vendor": "Checkmk GmbH",
              "versions": [
                {
                  "lessThan": "2.5.0p5",
                  "status": "affected",
                  "version": "2.5.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "2.4.0p31",
                  "status": "affected",
                  "version": "2.4.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "2.3.0p48",
                  "status": "affected",
                  "version": "2.3.0",
                  "versionType": "semver"
                },
                {
                  "status": "affected",
                  "version": "2.2.0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "2.5.0p5",
                      "versionStartIncluding": "2.5.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "2.4.0p31",
                      "versionStartIncluding": "2.4.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "2.3.0p48",
                      "versionStartIncluding": "2.3.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Stored cross-site scripting in the URL dashboard widget in Checkmk \u003c2.5.0p5, \u003c2.4.0p31, \u003c2.3.0p48, and all 2.2.0 versions allows a user with dashboard editing permissions to store a URL with a dangerous URI scheme such as javascript: that executes scripts in other users\u0027 browsers when they view the dashboard."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-592",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-592: Stored XSS"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "baseScore": 8.5,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N",
                "version": "4.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-79",
                  "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-06-08T12:05:28.554Z",
            "orgId": "f7d6281c-4801-44ce-ace2-493291dedb0f",
            "shortName": "Checkmk"
          },
          "references": [
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://checkmk.com/werk/17991"
            }
          ],
          "title": "Fix stored XSS in URL dashboard widget via dangerous URI schemes",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "f7d6281c-4801-44ce-ace2-493291dedb0f",
        "assignerShortName": "Checkmk",
        "cveId": "CVE-2026-7186",
        "datePublished": "2026-06-08T12:05:28.554Z",
        "dateReserved": "2026-04-27T12:54:14.627Z",
        "dateUpdated": "2026-06-08T13:15:47.369Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.