CVE-2026-33376
Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
7.4
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-05-13 20:16:20.367000
Last modified
2026-10-26 14:10:00.130000
View original CVE JSON
{
"id": "CVE-2026-33376",
"sourceIdentifier": "[email protected]",
"published": "2026-05-13T20:16:20.367",
"lastModified": "2026-10-26T14:10:00.130",
"vulnStatus": "Analyzed",
"cveTags": [],
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"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."
},
{
"lang": "es",
"value": "Al usar una lista de permitidos IPv6 para la función de Proxy de Autenticación, se establece por defecto en direcciones /32. Las direcciones que especifican una máscara explícitamente no se ven afectadas; para mitigar fácilmente, añada la máscara deseada (normalmente /128) a las direcciones. Solo el proxy de autenticación se ve afectado; Okta, SAML, LDAP, etc. no se ven afectados aquí."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Grafana",
"product": "Grafana OSS",
"defaultStatus": "unaffected",
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},
{
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],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "NONE"
},
"exploitabilityScore": 2.2,
"impactScore": 5.2
}
],
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"id": "CVE-2026-33376",
"options": [
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{
"automatable": "no"
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{
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"role": "CISA Coordinator",
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"references": [
{
"url": "https://grafana.com/security/security-advisories/cve-2026-33376",
"source": "[email protected]",
"tags": [
"Vendor Advisory"
]
}
]
}