Vulnerability-Lookup

GHSA-9758-8G25-VW94

Vulnerability from github – Published: 2026-09-02 18:32 – Updated: 2026-09-02 18:32

Details

Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct identities could collide on one key. An authenticated user who shapes their own attributes to collide with a higher-privileged user's, while that user's cache entry is live, is authenticated as that user, up to Administrator (authentication bypass by spoofing).

Severity

7.1 (High)


                  
                    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

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{
  "affected": [],
  "aliases": [
    "CVE-2026-14199"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-290"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-02T16:17:14Z",
    "severity": "HIGH"
  },
  "details": "Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct identities could collide on one key. An authenticated user who shapes their own attributes to collide with a higher-privileged user\u0027s, while that user\u0027s cache entry is live, is authenticated as that user, up to Administrator (authentication bypass by spoofing).",
  "id": "GHSA-9758-8g25-vw94",
  "modified": "2026-09-02T18:32:10Z",
  "published": "2026-09-02T18:32:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14199"
    },
    {
      "type": "WEB",
      "url": "https://grafana.com/security/security-advisories/cve-2026-14199"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-14199 (GCVE-0-2026-14199)

Vulnerability from cvelistv5 – Published: 2026-09-02 16:06 – Updated: 2026-09-03 08:07

Title

Session takeover via Auth Proxy cache key collision

Summary

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 00:00 UTC

CWE

Assigner

GRAFANA mitre root

References

1 reference

URL	Tags
https://grafana.com/security/security-advisories/…	vendor-advisory

Impacted products

2 products

Vendor	Product	Version
Grafana	Grafana Enterprise	Affected: 11.0.0 , ≤ 11.6.17 (semver) Affected: 12.0.0 , ≤ 12.2.11 (semver) Affected: 12.3.0 , ≤ 12.3.11 (semver) Affected: 12.4.0 , ≤ 12.4.9 (semver) Affected: 13.0.0 , ≤ 13.0.7 (semver) Affected: 13.1.0 , ≤ 13.1.4 (semver) Affected: 13.2.0 , ≤ 13.2.0 (semver)
Grafana	Grafana OSS	Affected: 11.0.0 , ≤ 11.6.17 (semver) Affected: 12.0.0 , ≤ 12.2.11 (semver) Affected: 12.3.0 , ≤ 12.3.11 (semver) Affected: 12.4.0 , ≤ 12.4.9 (semver) Affected: 13.0.0 , ≤ 13.0.7 (semver) Affected: 13.1.0 , ≤ 13.1.4 (semver) Affected: 13.2.0 , ≤ 13.2.0 (semver)

Date Public

2026-09-02 09:00

Credits

rebelarch (Researcher)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-14199",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-02T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-03T03:56:40.337Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "versions": [
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              "status": "affected",
              "version": "11.0.0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "12.2.11",
              "status": "affected",
              "version": "12.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.3.11",
              "status": "affected",
              "version": "12.3.0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "12.4.9",
              "status": "affected",
              "version": "12.4.0",
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            },
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              "lessThanOrEqual": "13.0.7",
              "status": "affected",
              "version": "13.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "13.1.4",
              "status": "affected",
              "version": "13.1.0",
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              "status": "affected",
              "version": "13.2.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Grafana OSS",
          "vendor": "Grafana",
          "versions": [
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              "lessThanOrEqual": "11.6.17",
              "status": "affected",
              "version": "11.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.2.11",
              "status": "affected",
              "version": "12.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.3.11",
              "status": "affected",
              "version": "12.3.0",
              "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"
            },
            {
              "lessThanOrEqual": "13.1.4",
              "status": "affected",
              "version": "13.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "13.2.0",
              "status": "affected",
              "version": "13.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "rebelarch (Researcher)"
        }
      ],
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      "descriptions": [
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          "lang": "en",
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "cweId": "CWE-290",
              "description": "CWE-290",
              "lang": "en",
              "type": "CWE"
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          ]
        },
        {
          "descriptions": [
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              "cweId": "CWE-1023",
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              "lang": "en",
              "type": "CWE"
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          ]
        },
        {
          "descriptions": [
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              "cweId": "CWE-863",
              "description": "CWE-863",
              "lang": "en",
              "type": "CWE"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-03T08:07:46.925Z",
        "orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
        "shortName": "GRAFANA"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://grafana.com/security/security-advisories/cve-2026-14199"
        }
      ],
      "source": {
        "discovery": "BUG_BOUNTY"
      },
      "title": "Session takeover via Auth Proxy cache key collision",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
    "assignerShortName": "GRAFANA",
    "cveId": "CVE-2026-14199",
    "datePublished": "2026-09-02T16:06:28.165Z",
    "dateReserved": "2026-06-30T09:16:17.958Z",
    "dateUpdated": "2026-09-03T08:07:46.925Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-9758-8G25-VW94

CVE-2026-14199 (GCVE-0-2026-14199)

Tags

Sightings

Nomenclature