CVE-2026-79656 (GCVE-0-2026-79656)

Vulnerability from cvelistv5 – Published: 2026-10-28 17:23 – Updated: 2026-10-28 17:23
VLAI
Title
OAuth and OIDC tokens written unredacted to server logs by the Generic OAuth, Google and GitLab connectors
Summary
A user with read access to Grafana's server logs, or to a log store they are shipped to, can recover the OAuth and OIDC access, refresh and ID tokens of users who sign in through the Generic OAuth, Google or GitLab providers. Grafana writes these tokens to its logs unredacted when an access or ID token is not a valid JWT, when the ID token is missing (at debug level) or is not a string (exposure of sensitive information in log files). The exposure is bounded by the scopes granted to the configured OAuth client.
Severity
6 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
CWE
Assigner
GRAFANA CNA under the mitre root
CNA scorecard C 71/100 over 54 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 , < 12.4.11 (semver)
Affected: 13.0.0 , < 13.0.9 (semver)
Affected: 13.1.0 , < 13.1.6 (semver)
Affected: 13.2.0 , < 13.2.2 (semver)
guessed Create a notification for this product.
Grafana Grafana Enterprise Affected: 0 , ≤ 12.3.11 (semver)
Affected: 12.4.0 , < 12.4.11 (semver)
Affected: 13.0.0 , < 13.0.9 (semver)
Affected: 13.1.0 , < 13.1.6 (semver)
Affected: 13.2.0 , < 13.2.2 (semver)
guessed Create a notification for this product.
Date Public
2026-09-15 12:21
Credits
Baptiste Roux (baprx)
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Grafana OSS",
          "vendor": "Grafana",
          "versions": [
            {
              "lessThanOrEqual": "12.3.11",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "affected",
              "version": "12.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "13.0.9",
              "status": "affected",
              "version": "13.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "13.1.6",
              "status": "affected",
              "version": "13.1.0",
              "versionType": "semver"
            },
            {
              "lessThan": "13.2.2",
              "status": "affected",
              "version": "13.2.0",
              "versionType": "semver"
            }
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        },
        {
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          "vendor": "Grafana",
          "versions": [
            {
              "lessThanOrEqual": "12.3.11",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "12.4.11",
              "status": "affected",
              "version": "12.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "13.0.9",
              "status": "affected",
              "version": "13.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "13.1.6",
              "status": "affected",
              "version": "13.1.0",
              "versionType": "semver"
            },
            {
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              "status": "affected",
              "version": "13.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Baptiste Roux (baprx)"
        }
      ],
      "datePublic": "2026-09-15T12:21:32.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A user with read access to Grafana\u0027s server logs, or to a log store they are shipped to, can recover the OAuth and OIDC access, refresh and ID tokens of users who sign in through the Generic OAuth, Google or GitLab providers. Grafana writes these tokens to its logs unredacted when an access or ID token is not a valid JWT, when the ID token is missing (at debug level) or is not a string (exposure of sensitive information in log files). The exposure is bounded by the scopes granted to the configured OAuth client."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 6,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-532",
              "description": "CWE-532",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T17:23:44.625Z",
        "orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
        "shortName": "GRAFANA"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://grafana.com/security/security-advisories/cve-2026-79656"
        }
      ],
      "source": {
        "discovery": "EXTERNAL_REPORT"
      },
      "title": "OAuth and OIDC tokens written unredacted to server logs by the Generic OAuth, Google and GitLab connectors"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
    "assignerShortName": "GRAFANA",
    "cveId": "CVE-2026-79656",
    "datePublished": "2026-10-28T17:23:44.625Z",
    "dateReserved": "2026-08-25T11:00:05.466Z",
    "dateUpdated": "2026-10-28T17:23:44.625Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-79656",
      "date": "2026-10-31",
      "epss": "0.00161",
      "percentile": "0.0523"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Grafana OSS",
                "vendor": "Grafana",
                "versions": [
                  {
                    "lessThanOrEqual": "12.3.11",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "12.4.11",
                    "status": "affected",
                    "version": "12.4.0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "13.0.9",
                    "status": "affected",
                    "version": "13.0.0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "13.1.6",
                    "status": "affected",
                    "version": "13.1.0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "13.2.2",
                    "status": "affected",
                    "version": "13.2.0",
                    "versionType": "semver"
                  }
                ]
              },
              {
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                "vendor": "Grafana",
                "versions": [
                  {
                    "lessThanOrEqual": "12.3.11",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "12.4.11",
                    "status": "affected",
                    "version": "12.4.0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "13.0.9",
                    "status": "affected",
                    "version": "13.0.0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "13.1.6",
                    "status": "affected",
                    "version": "13.1.0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "13.2.2",
                    "status": "affected",
                    "version": "13.2.0",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "security@grafana.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A user with read access to Grafana\u0027s server logs, or to a log store they are shipped to, can recover the OAuth and OIDC access, refresh and ID tokens of users who sign in through the Generic OAuth, Google or GitLab providers. Grafana writes these tokens to its logs unredacted when an access or ID token is not a valid JWT, when the ID token is missing (at debug level) or is not a string (exposure of sensitive information in log files). The exposure is bounded by the scopes granted to the configured OAuth client."
          }
        ],
        "id": "CVE-2026-79656",
        "lastModified": "2026-10-29T15:29:45.363",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 6.0,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "HIGH",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N",
                "version": "3.1"
              },
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              "impactScore": 4.0,
              "source": "security@grafana.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-28T18:17:20.270",
        "references": [
          {
            "source": "security@grafana.com",
            "url": "https://grafana.com/security/security-advisories/cve-2026-79656"
          }
        ],
        "sourceIdentifier": "security@grafana.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
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              {
                "lang": "en",
                "value": "CWE-532"
              }
            ],
            "source": "security@grafana.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-30T09:09:44+00:00",
      "cve": "CVE-2026-79656",
      "id": "CVE-2026-79656",
      "initial_release_date": "2026-10-29T13:02:28.194000+00:00",
      "product_status:fixed": "11",
      "product_status:known_affected": "28",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "grafana: OAuth and OIDC tokens written unredacted to Grafana server logs",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-79656.json",
      "version": "3"
    }
  }
}



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