CVE-2026-17033 (GCVE-0-2026-17033)

Vulnerability from cvelistv5 – Published: 2026-08-24 13:52 – Updated: 2026-08-27 17:22
VLAI
Title
CVE-2026-17033 CVE Record
Summary
An authenticated attacker with Editor access or alert.instances.external:write can submit an external Alertmanager alert containing a controlled generatorURL. The attacker is authorized to create the alert, but not to execute script in another user's Grafana session. Grafana renders alert.generatorURL directly as the Alert Details See source LinkButton href without URL-scheme sanitization or a safe-protocol allowlist. The click interceptor's :// heuristic can be bypassed by placing :// inside a JavaScript comment. When a user with read access clicks See source, the browser executes attacker-controlled JavaScript in the Grafana origin with the clicking user's permissions.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 15:10 UTC
CWE
  • CWE-79 - IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING')
Assigner
GRAFANA CNA under the mitre root
CNA scorecard C 73/100 over 55 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Grafana Grafana OSS Affected: 0 , ≤ 12.3.11 (semver)
Affected: 12.4.0 , ≤ 12.4.9 (semver)
Affected: 13.0.0 , ≤ 13.0.7 (semver)
guessed Create a notification for this product.
Date Public
2026-08-24 12:11
Credits
nlgbao1340
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-17033",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-24T15:10:56.482893Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-24T15:11:08.143Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Grafana OSS",
          "vendor": "Grafana",
          "versions": [
            {
              "lessThanOrEqual": "12.3.11",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.4.9",
              "status": "affected",
              "version": "12.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "13.0.7",
              "status": "affected",
              "version": "13.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "nlgbao1340"
        }
      ],
      "datePublic": "2026-08-24T12:11:43.533Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "An authenticated attacker with Editor access or alert.instances.external:write can submit an external Alertmanager alert containing a controlled generatorURL. The attacker is authorized to create the alert, but not to execute script in another user\u0027s Grafana session.\n\nGrafana renders alert.generatorURL directly as the Alert Details See source LinkButton href without URL-scheme sanitization or a safe-protocol allowlist. The click interceptor\u0027s :// heuristic can be bypassed by placing :// inside a JavaScript comment. When a user with read access clicks See source, the browser executes attacker-controlled JavaScript in the Grafana origin with the clicking user\u0027s permissions."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "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": "2026-08-27T17:22:43.827Z",
        "orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
        "shortName": "GRAFANA"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://grafana.com/security/security-advisories/cve-2026-17033"
        }
      ],
      "source": {
        "discovery": "BUG_BOUNTY"
      },
      "title": "CVE-2026-17033 CVE Record",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
    "assignerShortName": "GRAFANA",
    "cveId": "CVE-2026-17033",
    "datePublished": "2026-08-24T13:52:26.910Z",
    "dateReserved": "2026-07-24T12:11:43.417Z",
    "dateUpdated": "2026-08-27T17:22:43.827Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-17033",
      "date": "2026-11-12",
      "epss": "0.00218",
      "percentile": "0.12431"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Grafana OSS",
                "vendor": "Grafana",
                "versions": [
                  {
                    "lessThanOrEqual": "12.3.11",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "12.4.9",
                    "status": "affected",
                    "version": "12.4.0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "13.0.7",
                    "status": "affected",
                    "version": "13.0.0",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "security@grafana.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "An authenticated attacker with Editor access or alert.instances.external:write can submit an external Alertmanager alert containing a controlled generatorURL. The attacker is authorized to create the alert, but not to execute script in another user\u0027s Grafana session.\n\nGrafana renders alert.generatorURL directly as the Alert Details See source LinkButton href without URL-scheme sanitization or a safe-protocol allowlist. The click interceptor\u0027s :// heuristic can be bypassed by placing :// inside a JavaScript comment. When a user with read access clicks See source, the browser executes attacker-controlled JavaScript in the Grafana origin with the clicking user\u0027s permissions."
          },
          {
            "lang": "es",
            "value": "Un atacante autenticado con acceso de Editor o alert.instances.external:write puede enviar una alerta externa de Alertmanager que contiene una generatorURL controlada. El atacante est\u00e1 autorizado para crear la alerta, pero no para ejecutar scripts en la sesi\u00f3n de Grafana de otro usuario.\n\nGrafana renderiza alert.generatorURL directamente como el href del bot\u00f3n de enlace \u0027Ver origen\u0027 de los detalles de la alerta sin saneamiento del esquema de URL ni una lista de permitidos de protocolos seguros. La heur\u00edstica :// del interceptor de clics puede ser eludida colocando :// dentro de un comentario de JavaScript. Cuando un usuario con acceso de lectura hace clic en \u0027Ver origen\u0027, el navegador ejecuta JavaScript controlado por el atacante en el origen de Grafana con los permisos del usuario que hace clic."
          }
        ],
        "id": "CVE-2026-17033",
        "lastModified": "2026-10-12T15:10:00.207",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 6.8,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "LOW",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L",
                "version": "3.1"
              },
              "exploitabilityScore": 2.1,
              "impactScore": 4.7,
              "source": "security@grafana.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-17033",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-24T15:10:56.482893Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-08-24T14:16:50.717",
        "references": [
          {
            "source": "security@grafana.com",
            "url": "https://grafana.com/security/security-advisories/cve-2026-17033"
          }
        ],
        "sourceIdentifier": "security@grafana.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-79"
              }
            ],
            "source": "security@grafana.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-11-05T19:24:21+00:00",
      "cve": "CVE-2026-17033",
      "id": "CVE-2026-17033",
      "initial_release_date": "2026-08-24T13:52:26.910000+00:00",
      "product_status:fixed": "9",
      "product_status:known_affected": "23",
      "product_status:known_not_affected": "4",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "grafana: Grafana: Cross-Site Scripting (XSS) via unsanitized Alertmanager generatorURL",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-17033.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-10T01:28:20Z",
      "cve": "CVE-2026-17033",
      "id": "CVE-2026-17033",
      "initial_release_date": "2026-08-25T01:44:14Z",
      "product_status:known_affected": "2",
      "product_status:recommended": "21",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-17033",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-17033.json",
      "version": "4"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-17033",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-24T15:10:56.482893Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-24T15:11:03.288Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Grafana OSS",
              "vendor": "Grafana",
              "versions": [
                {
                  "lessThanOrEqual": "12.3.11",
                  "status": "affected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "12.4.9",
                  "status": "affected",
                  "version": "12.4.0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "13.0.7",
                  "status": "affected",
                  "version": "13.0.0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "nlgbao1340"
            }
          ],
          "datePublic": "2026-08-24T12:11:43.533Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "An authenticated attacker with Editor access or alert.instances.external:write can submit an external Alertmanager alert containing a controlled generatorURL. The attacker is authorized to create the alert, but not to execute script in another user\u0027s Grafana session.\n\nGrafana renders alert.generatorURL directly as the Alert Details See source LinkButton href without URL-scheme sanitization or a safe-protocol allowlist. The click interceptor\u0027s :// heuristic can be bypassed by placing :// inside a JavaScript comment. When a user with read access clicks See source, the browser executes attacker-controlled JavaScript in the Grafana origin with the clicking user\u0027s permissions."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 6.8,
                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L",
                "version": "3.1"
              }
            }
          ],
          "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": "2026-08-27T17:22:43.827Z",
            "orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
            "shortName": "GRAFANA"
          },
          "references": [
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://grafana.com/security/security-advisories/cve-2026-17033"
            }
          ],
          "source": {
            "discovery": "BUG_BOUNTY"
          },
          "title": "CVE-2026-17033 CVE Record",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
        "assignerShortName": "GRAFANA",
        "cveId": "CVE-2026-17033",
        "datePublished": "2026-08-24T13:52:26.910Z",
        "dateReserved": "2026-07-24T12:11:43.417Z",
        "dateUpdated": "2026-08-27T17:22:43.827Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    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.