Description
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.
Published: 2026-05-13
Score: 7.4 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Thu, 14 May 2026 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-285

Thu, 14 May 2026 14:15:00 +0000

Type Values Removed Values Added
First Time appeared Grafana
Grafana grafana
Vendors & Products Grafana
Grafana grafana

Thu, 14 May 2026 13:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1188
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 13 May 2026 22:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-285

Wed, 13 May 2026 20:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Auth Proxy IPv6 whitelist bypass
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GRAFANA

Published:

Updated: 2026-05-14T12:37:51.925Z

Reserved: 2026-03-19T07:55:06.977Z

Link: CVE-2026-33376

cve-icon Vulnrichment

Updated: 2026-05-14T12:37:45.503Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-13T20:16:20.367

Modified: 2026-05-14T16:21:02.930

Link: CVE-2026-33376

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-14T18:45:26Z

Weaknesses