{"id":"CVE-2026-33376","state":"PUBLISHED","title":"Auth Proxy IPv6 whitelist bypass","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.","publishedAt":"2026-05-13T19:28:34.473Z","updatedAt":"2026-08-27T17:22:50.919Z","severity":{"score":7.4,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"GRAFANA"},"assigner":"GRAFANA","products":["Grafana Grafana OSS"],"affected":[{"vendor":"Grafana","product":"Grafana OSS","defaultStatus":"unaffected","versions":[{"version":"9.4.0","status":"affected","lessThanOrEqual":"11.6.14","versionType":"semver"},{"version":"11.6.14","status":"affected","lessThan":"11.6.14+security-04","versionType":"custom"},{"version":"12.0.0","status":"affected","lessThanOrEqual":"12.2.8","versionType":"semver"},{"version":"12.2.8","status":"affected","lessThan":"12.2.8+security-04","versionType":"custom"},{"version":"12.3.0","status":"affected","lessThanOrEqual":"12.3.6","versionType":"semver"},{"version":"12.3.6","status":"affected","lessThan":"12.3.6+security-04","versionType":"custom"},{"version":"12.4.0","status":"affected","lessThanOrEqual":"12.4.3","versionType":"semver"},{"version":"12.4.3","status":"affected","lessThan":"12.4.3+security-02","versionType":"custom"},{"version":"13.0.0","status":"affected","lessThanOrEqual":"13.0.1","versionType":"semver"},{"version":"13.0.1","status":"affected","lessThan":"13.0.1+security-01","versionType":"custom"}]}],"references":["https://grafana.com/security/security-advisories/cve-2026-33376"],"weaknesses":["CWE-1188"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/33xxx/CVE-2026-33376.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33376","state":"PUBLISHED","datePublished":"2026-05-13T19:28:34.473Z","dateUpdated":"2026-08-27T17:22:50.919Z","assignerShortName":"GRAFANA","assignerOrgId":"57da9224-a3e2-4646-9d0e-c4dc2e05e7da","dateReserved":"2026-03-19T07:55:06.977Z"},"containers":{"cna":{"title":"Auth Proxy IPv6 whitelist bypass","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Grafana","product":"Grafana OSS","defaultStatus":"unaffected","versions":[{"version":"9.4.0","status":"affected","lessThanOrEqual":"11.6.14","versionType":"semver"},{"version":"11.6.14","status":"affected","lessThan":"11.6.14+security-04","versionType":"custom"},{"version":"12.0.0","status":"affected","lessThanOrEqual":"12.2.8","versionType":"semver"},{"version":"12.2.8","status":"affected","lessThan":"12.2.8+security-04","versionType":"custom"},{"version":"12.3.0","status":"affected","lessThanOrEqual":"12.3.6","versionType":"semver"},{"version":"12.3.6","status":"affected","lessThan":"12.3.6+security-04","versionType":"custom"},{"version":"12.4.0","status":"affected","lessThanOrEqual":"12.4.3","versionType":"semver"},{"version":"12.4.3","status":"affected","lessThan":"12.4.3+security-02","versionType":"custom"},{"version":"13.0.0","status":"affected","lessThanOrEqual":"13.0.1","versionType":"semver"},{"version":"13.0.1","status":"affected","lessThan":"13.0.1+security-01","versionType":"custom"}]}],"references":[{"url":"https://grafana.com/security/security-advisories/cve-2026-33376","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"version":"3.1","baseScore":7.4,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}}],"providerMetadata":{"shortName":"GRAFANA","orgId":"57da9224-a3e2-4646-9d0e-c4dc2e05e7da","dateUpdated":"2026-08-27T17:22:50.919Z"},"datePublic":"2026-05-13T07:44:00.000Z","source":{"discovery":"BUG_BOUNTY"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-15T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-33376"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1188","type":"CWE","lang":"en","description":"CWE-1188 Initialization of a Resource with an Insecure Default"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-16T03:56:01.168Z"}}]}}}