CVE-2026-33376
Auth Proxy IPv6 whitelist bypass
CVSS Score
7.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | grafana |
| Product | grafana oss |
| Ecosystems | |
| Industries | Technology |
| Published | May 13, 2026 |
| Last Updated | May 13, 2026 |
Stay Ahead of the Next One
Get instant alerts for grafana grafana oss
Be the first to know when new high vulnerabilities affecting grafana grafana oss are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Grafana / Grafana OSS
9.4.0 ≤ 11.6.14 11.6.14 < 11.6.14+security-04 12.0.0 ≤ 12.2.8 12.2.8 < 12.2.8+security-04 12.3.0 ≤ 12.3.6 12.3.6 < 12.3.6+security-04 12.4.0 ≤ 12.4.3 12.4.3 < 12.4.3+security-02 13.0.0 ≤ 13.0.1 13.0.1 < 13.0.1+security-01