Vulnerability-Lookup

RHSA-2026:58982

Vulnerability from csaf_redhat - Published: 2026-08-24 15:24 - Updated: 2026-09-06 03:27

Summary

Red Hat Security Advisory: grafana security, bug fix, and enhancement update

Severity

Moderate

Notes

Topic: An update for grafana is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: Grafana is an open source, feature rich metrics dashboard and graph editor for Graphite, InfluxDB & OpenTSDB. Security Fix(es): * grafana: Grafana: Privilege escalation via dashboard overwrite (CVE-2026-33377) * grafana: Grafana Auth Proxy: Unauthorized access due to incorrect IPv6 allow-list default (CVE-2026-33376) Bug Fix(es) and Enhancement(s): * Avoid unbounded memory growth [rhel-9.8.z] (JIRA:RHEL-242865) * Limit the size of the request body before processing it (JIRA:RHEL-242866) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-33376

A flaw in Grafana's Auth Proxy IPv6 allow-list incorrectly defaults to a broad /32 subnet mask instead of a strict /128. This misconfiguration allows remote attackers to bypass access restrictions, potentially leading to unauthorized access and data manipulation.

7.4 (High)


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

CWE-183 - Permissive List of Allowed Inputs

Affected products

Fixed 17 products

Product	Version	Remediation
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-0:10.2.6-23.el9_8.2.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-0:10.2.6-23.el9_8.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-0:10.2.6-23.el9_8.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-0:10.2.6-23.el9_8.2.src	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-0:10.2.6-23.el9_8.2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debuginfo-0:10.2.6-23.el9_8.2.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debuginfo-0:10.2.6-23.el9_8.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debuginfo-0:10.2.6-23.el9_8.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debuginfo-0:10.2.6-23.el9_8.2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debugsource-0:10.2.6-23.el9_8.2.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debugsource-0:10.2.6-23.el9_8.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debugsource-0:10.2.6-23.el9_8.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debugsource-0:10.2.6-23.el9_8.2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-selinux-0:10.2.6-23.el9_8.2.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-selinux-0:10.2.6-23.el9_8.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-selinux-0:10.2.6-23.el9_8.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-selinux-0:10.2.6-23.el9_8.2.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

CVE-2026-33377

A flaw was found in Grafana. A user with editor privileges can overwrite a dashboard not owned by them, leading to privilege escalation on that specific dashboard. This allows the editor to gain administrative control over the affected dashboard.

7.1 (High)


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

CWE-267 - Privilege Defined With Unsafe Actions

Affected products

Fixed 17 products

Product	Version	Remediation
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-0:10.2.6-23.el9_8.2.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-0:10.2.6-23.el9_8.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-0:10.2.6-23.el9_8.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-0:10.2.6-23.el9_8.2.src	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-0:10.2.6-23.el9_8.2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debuginfo-0:10.2.6-23.el9_8.2.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debuginfo-0:10.2.6-23.el9_8.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debuginfo-0:10.2.6-23.el9_8.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debuginfo-0:10.2.6-23.el9_8.2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debugsource-0:10.2.6-23.el9_8.2.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debugsource-0:10.2.6-23.el9_8.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debugsource-0:10.2.6-23.el9_8.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-debugsource-0:10.2.6-23.el9_8.2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-selinux-0:10.2.6-23.el9_8.2.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-selinux-0:10.2.6-23.el9_8.2.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-selinux-0:10.2.6-23.el9_8.2.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:grafana-selinux-0:10.2.6-23.el9_8.2.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

References

17 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:58982	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2477246	external
https://bugzilla.redhat.com/show_bug.cgi?id=2477262	external
https://issues.redhat.com/browse/RHEL-242865	external
https://issues.redhat.com/browse/RHEL-242866	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-33376	self
https://bugzilla.redhat.com/show_bug.cgi?id=2477262	external
https://www.cve.org/CVERecord?id=CVE-2026-33376	external
https://nvd.nist.gov/vuln/detail/CVE-2026-33376	external
https://grafana.com/security/security-advisories/…	external
https://access.redhat.com/security/cve/CVE-2026-33377	self
https://bugzilla.redhat.com/show_bug.cgi?id=2477246	external
https://www.cve.org/CVERecord?id=CVE-2026-33377	external
https://nvd.nist.gov/vuln/detail/CVE-2026-33377	external
https://grafana.com/security/security-advisories/…	external

JSON

To clipboard

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          "category": "impact",
          "details": "Moderate"
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      ],
      "title": "grafana: Grafana Auth Proxy: Unauthorized access due to incorrect IPv6 allow-list default"
    },
    {
      "cve": "CVE-2026-33377",
      "cwe": {
        "id": "CWE-267",
        "name": "Privilege Defined With Unsafe Actions"
      },
      "discovery_date": "2026-05-13T20:02:01.027996+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2477246"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Grafana. A user with editor privileges can overwrite a dashboard not owned by them, leading to privilege escalation on that specific dashboard. This allows the editor to gain administrative control over the affected dashboard.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "grafana: Grafana: Privilege escalation via dashboard overwrite",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "A privilege escalation flaw exists in Grafana, allowing an authenticated editor with write access to a dashboard to overwrite other dashboards not owned by them. This grants the editor administrative control over the targeted dashboard, potentially leading to unauthorized data manipulation or exposure within the Grafana environment.\n\nRed Hat\u0027s default deployment does not grant edit access to normal users. Hence, this is rated moderate.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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            "integrityImpact": "HIGH",
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            "scope": "UNCHANGED",
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "grafana: Grafana: Privilege escalation via dashboard overwrite"
    }
  ]
}

CVE-2026-33376 (GCVE-0-2026-33376)

Vulnerability from cvelistv5 – Published: 2026-05-13 19:28 – Updated: 2026-08-27 17:22

Title

Auth Proxy IPv6 whitelist bypass

Summary

When using an IPv6 allow-list for the Auth Proxy feature, it defaults to /32 addresses. Addresses specifying a mask explicitly are not affected; to mitigate easily, add the desired mask (usually /128) to the addresses. Only auth proxy is affected; Okta, SAML, LDAP, etc are unaffected here.

Severity

7.4 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-15 00:00 UTC

CWE

CWE-1188 - Initialization of a Resource with an Insecure Default

Assigner

GRAFANA mitre root

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
Grafana	Grafana OSS	Affected: 9.4.0 , ≤ 11.6.14 (semver) Affected: 11.6.14 , < 11.6.14+security-04 (custom) Affected: 12.0.0 , ≤ 12.2.8 (semver) Affected: 12.2.8 , < 12.2.8+security-04 (custom) Affected: 12.3.0 , ≤ 12.3.6 (semver) Affected: 12.3.6 , < 12.3.6+security-04 (custom) Affected: 12.4.0 , ≤ 12.4.3 (semver) Affected: 12.4.3 , < 12.4.3+security-02 (custom) Affected: 13.0.0 , ≤ 13.0.1 (semver) Affected: 13.0.1 , < 13.0.1+security-01 (custom)

Date Public

2026-05-13 07:44

Show details on NVD website

JSON

To clipboard

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CVE-2026-33377 (GCVE-0-2026-33377)

Vulnerability from cvelistv5 – Published: 2026-05-13 19:28 – Updated: 2026-08-27 17:22

Title

Dashboard Import Overwrites ACL — Editor Privilege Escalation to Dashboard Admin

Summary

An Editor can overwrite a dashboard not owned by them to acquire admin on that specific dashboard. The user must have write access to the dashboard to escalate privilege.

Severity

7.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-16 03:55 UTC

CWE

CWE-284 - Improper Access Control

Assigner

GRAFANA mitre root

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
Grafana	Grafana OSS	Affected: 8.5.0 , ≤ 11.6.14 (semver) Affected: 11.6.14 , < 11.6.14+security-04 (custom) Affected: 12.0.0 , ≤ 12.2.8 (semver) Affected: 12.2.8 , < 12.2.8+security-04 (custom) Affected: 12.3.0 , ≤ 12.3.6 (semver) Affected: 12.3.6 , < 12.3.6+security-04 (custom) Affected: 12.4.0 , ≤ 12.4.3 (semver) Affected: 12.4.3 , < 12.4.3+security-02 (custom) Affected: 13.0.0 , ≤ 13.0.1 (semver) Affected: 13.0.1 , < 13.0.1+security-01 (custom)

Date Public

2026-05-13 07:44

Show details on NVD website

JSON

To clipboard

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            "other": {
              "content": {
                "id": "CVE-2026-33377",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-16T03:55:59.661383Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-284",
                "description": "CWE-284 Improper Access Control",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-18T18:33:09.317Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Grafana OSS",
          "vendor": "Grafana",
          "versions": [
            {
              "lessThanOrEqual": "11.6.14",
              "status": "affected",
              "version": "8.5.0",
              "versionType": "semver"
            },
            {
              "lessThan": "11.6.14+security-04",
              "status": "affected",
              "version": "11.6.14",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "12.2.8",
              "status": "affected",
              "version": "12.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "12.2.8+security-04",
              "status": "affected",
              "version": "12.2.8",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "12.3.6",
              "status": "affected",
              "version": "12.3.0",
              "versionType": "semver"
            },
            {
              "lessThan": "12.3.6+security-04",
              "status": "affected",
              "version": "12.3.6",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "12.4.3",
              "status": "affected",
              "version": "12.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "12.4.3+security-02",
              "status": "affected",
              "version": "12.4.3",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "13.0.1",
              "status": "affected",
              "version": "13.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "13.0.1+security-01",
              "status": "affected",
              "version": "13.0.1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2026-05-13T07:44:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "An Editor can overwrite a dashboard not owned by them to acquire admin on that specific dashboard. The user must have write access to the dashboard to escalate privilege."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-27T17:22:32.185Z",
        "orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
        "shortName": "GRAFANA"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://grafana.com/security/security-advisories/cve-2026-33377"
        }
      ],
      "source": {
        "discovery": "BUG_BOUNTY"
      },
      "title": "Dashboard Import Overwrites ACL \u2014 Editor Privilege Escalation to Dashboard Admin",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
    "assignerShortName": "GRAFANA",
    "cveId": "CVE-2026-33377",
    "datePublished": "2026-05-13T19:28:28.154Z",
    "dateReserved": "2026-03-19T07:55:06.977Z",
    "dateUpdated": "2026-08-27T17:22:32.185Z",
    "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

RHSA-2026:58982

CVE-2026-33376 (GCVE-0-2026-33376)

CVE-2026-33377 (GCVE-0-2026-33377)

Tags

Sightings

Nomenclature