VulnerabilityAnalyzed
CVE-2026-33376
When using an IPv6 allow-list for the Auth Proxy feature, it defaults to /32 addresses.
HIGH 7.4EPSS 0.28%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.4 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 0.28% probability · 21th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1188
- Affected
- grafana/grafana
- Source
- security@grafana.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.