Name: CVE-2026-33376: Initialization of a Resource with an Insecure Default
Creator: Rapid7
Published: 2026-05-13T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-33376, CWE-1188, CVSS 7.4, EPSS 0.00282

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.

CVSS Details

CVSS 3.1 Base Score: 7.4
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alma_linux	—	Upgrade grafanaUpgrade grafana-selinux	Oct 11, 2026	Aug 24, 2026
Redhat_linux	—	Upgrade grafana-debugsourceUpgrade grafanaUpgrade grafana-selinuxUpgrade grafana-debuginfo	Jul 20, 2026	May 13, 2026
Rocky_linux	—	Upgrade grafana-selinuxUpgrade grafana-debuginfoUpgrade grafanaUpgrade grafana-debugsource	Aug 17, 2026	Aug 13, 2026

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CVSS Details

Covered by Rapid7

Prioritise with Active Threat Intelligence