Vulnerability-Lookup

RHSA-2026:54178

Vulnerability from csaf_redhat - Published: 2026-08-12 07:12 - Updated: 2026-08-12 09:34

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 10. 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) * grafana: Grafana: Denial of Service via unbounded memory growth in OAuth login route (CVE-2026-8609) * grafana: Grafana: Denial of Service via excessive memory allocation from large API request payloads (CVE-2026-33382) Bug Fix(es) and Enhancement(s): * [grafana / rhel-10.2.z] Remove Lua ExclusiveArch macro for Konflux build (JIRA:RHEL-188282) 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-2026-8609

A flaw was found in Grafana. An unauthenticated attacker can repeatedly access the OAuth login route with unique values. This can lead to unbounded memory growth, eventually exhausting system memory and causing the Grafana instance to crash. This results in a denial of service for legitimate users.

5.3 (Medium)


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

CWE-770 - Allocation of Resources Without Limits or Throttling

Affected products

Fixed 17 products

Product	Version	Remediation
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.src	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

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-10.2.Z:grafana-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.src	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.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-10.2.Z:grafana-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.src	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

CVE-2026-33382

A flaw in Grafana's API endpoints allows remote attackers to send excessively large request bodies without authentication. This exhausts server memory, resulting in a complete denial of service (DoS).

5.3 (Medium)


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

CWE-770 - Allocation of Resources Without Limits or Throttling

Affected products

Fixed 17 products

Product	Version	Remediation
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.src	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debuginfo-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-debugsource-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-10.2.Z:grafana-selinux-0:10.2.6-28.el10_2.4.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

References

28 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:54178	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://bugzilla.redhat.com/show_bug.cgi?id=2499061	external
https://bugzilla.redhat.com/show_bug.cgi?id=2499062	external
https://issues.redhat.com/browse/RHEL-188282	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-8609	self
https://bugzilla.redhat.com/show_bug.cgi?id=2499061	external
https://www.cve.org/CVERecord?id=CVE-2026-8609	external
https://nvd.nist.gov/vuln/detail/CVE-2026-8609	external
https://grafana.com/security/security-advisories/…	external
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
https://access.redhat.com/security/cve/CVE-2026-33382	self
https://bugzilla.redhat.com/show_bug.cgi?id=2499062	external
https://www.cve.org/CVERecord?id=CVE-2026-33382	external
https://nvd.nist.gov/vuln/detail/CVE-2026-33382	external
https://grafana.com/security/security-advisories/…	external

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          "title": "Vulnerability description"
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          "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"
        },
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          "title": "Vulnerability summary"
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "grafana: Grafana: Privilege escalation via dashboard overwrite"
    },
    {
      "cve": "CVE-2026-33382",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2026-07-10T16:01:52.612017+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2499062"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw in Grafana\u0027s API endpoints allows remote attackers to send excessively large request bodies without authentication. This exhausts server memory, resulting in a complete denial of service (DoS).",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "grafana: Grafana: Denial of Service via excessive memory allocation from large API request payloads",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Moderate: This denial of service vulnerability in Grafana stems from a lack of request body size limits on certain API endpoints, some of which are unauthenticated. Exploitation by a remote attacker sending large payloads can exhaust system memory, leading to service unavailability. The impact is assessed as Moderate because it primarily affects the availability of the Grafana application rather than compromising data or executing arbitrary code.",
          "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"
        }
      ],
      "product_status": {
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      "references": [
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-33382"
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        {
          "category": "external",
          "summary": "RHBZ#2499062",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2499062"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-33382",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-33382"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-33382",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33382"
        },
        {
          "category": "external",
          "summary": "https://grafana.com/security/security-advisories/cve-2026-33382",
          "url": "https://grafana.com/security/security-advisories/cve-2026-33382"
        }
      ],
      "release_date": "2026-07-10T14:58:23.329000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-12T07:12:13+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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        {
          "category": "workaround",
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            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
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      ],
      "title": "grafana: Grafana: Denial of Service via excessive memory allocation from large API request payloads"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-05-13 19:28 – Updated: 2026-08-12 13:17

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

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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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-33376",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-15T00:00:00+00:00",
                "version": "2.0.3"
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              "type": "ssvc"
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              {
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                "description": "CWE-1188 Initialization of a Resource with an Insecure Default",
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CVE-2026-33377 (GCVE-0-2026-33377)

Vulnerability from cvelistv5 – Published: 2026-05-13 19:28 – Updated: 2026-08-12 13:17

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

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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CVE-2026-33382 (GCVE-0-2026-33382)

Vulnerability from cvelistv5 – Published: 2026-07-10 14:58 – Updated: 2026-08-12 13:17

Title

Denial of service via unbounded request body size

Summary

Several Grafana API endpoints, some of them unauthenticated, do not limit the size of the request body before processing it. An attacker can send very large payloads that force excessive memory allocation, potentially exhausting memory and causing a denial of service.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-10 15:59 UTC

CWE

CWE-400

Assigner

GRAFANA

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
Grafana	Grafana OSS	Affected: 11.6.0 , ≤ 11.6.14 (semver) Affected: 12.2.0 , ≤ 12.2.8 (semver) Affected: 12.3.0 , ≤ 12.3.6 (semver) Affected: 12.4.0 , ≤ 12.4.3 (semver) Affected: 13.0.0 , ≤ 13.0.1 (semver)

Date Public

2026-06-09 00:00

Show details on NVD website

JSON

To clipboard

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CVE-2026-8609 (GCVE-0-2026-8609)

Vulnerability from cvelistv5 – Published: 2026-07-10 14:58 – Updated: 2026-08-12 13:17

Title

Pre-authentication denial of service via the OAuth login route

Summary

An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance (denial of service).

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-10 15:53 UTC

CWE

CWE-400
CWE-400 - Uncontrolled Resource Consumption

Assigner

GRAFANA

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
Grafana	Grafana OSS	Affected: 11.6.0 , ≤ 11.6.14 (semver) Affected: 12.2.0 , ≤ 12.2.8 (semver) Affected: 12.3.0 , ≤ 12.3.6 (semver) Affected: 12.4.0 , ≤ 12.4.3 (semver) Affected: 13.0.0 , ≤ 13.0.1 (semver)

Date Public

2026-06-09 00:00

Credits

cyberjoker (Researcher)

Show details on NVD website

JSON

To clipboard

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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-2026:54178

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

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

CVE-2026-33382 (GCVE-0-2026-33382)

CVE-2026-8609 (GCVE-0-2026-8609)

Tags

Sightings

Nomenclature