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CVE-2026-33376

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CVE-2026-33376

Published: May 13, 2026

Modified: May 16, 2026

PUBLISHED

CVSS v3.1

7.4

HIGH

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.

VendorProductVersions

Grafana

Grafana OSS

affected
9.4.0 - <= 11.6.14
affected
11.6.14 - < 11.6.14+security-04
affected
12.0.0 - <= 12.2.8
affected
12.2.8 - < 12.2.8+security-04
affected
12.3.0 - <= 12.3.6

+5 more versions

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

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