CVE-2026-33376

EUVD-2026-30142
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.4 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 18%
Affected Products (NVD)
VendorProductVersion
grafanagrafana
8.5.0 ≤
𝑥
< 11.6.14
grafanagrafana
12.2.0 ≤
𝑥
< 12.2.8
grafanagrafana
12.3.0 ≤
𝑥
< 12.3.6
grafanagrafana
12.4.0 ≤
𝑥
< 12.4.3
grafanagrafana
11.6.14
grafanagrafana
11.6.14:security01
grafanagrafana
12.2.8
grafanagrafana
12.2.8:security01
grafanagrafana
12.3.6
grafanagrafana
12.3.6:security01
grafanagrafana
12.4.3
grafanagrafana
13.0.0
grafanagrafana
13.0.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://grafana.com/security/security-advisories/cve-2026-33376