> CVE-2026-33376 [HIGH]

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PUBLISHED
2026-05-13 20:16
MODIFIED
2026-05-13 20:16
CVSS_SCORE V3
7.4
EPSS (Prob. Exploit)
0.28%
Top 79.2%
DATA SOURCES:
NVD đź”— 2026-05-13 FIRST EPSS đź”— 2026-11-01 OSV đź”— 2026-11-02

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EXPLOITABILITY
2.2
IMPACT
5.2

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
None
Aucune interruption de service

> RED HAT SECURITY ADVISORIES

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Red Hat Security Advisory: Multicluster Global Hub 1.7.2 security update
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Red Hat Security Advisory: Multicluster Global Hub 1.4.8 security update
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Red Hat Security Advisory: grafana security update
An update for grafana is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A C...

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Auth Proxy IPv6 whitelist bypass

AFFECTED PACKAGES:
Unknown / Unknown
9 versions affected
ALIASES:
BIT-grafana-2026-33376

> HISTORIQUE DES MODIFICATIONS

Première apparition
13/05/2026 20:16
Source: NVD
Total des modifications: 0 Dernière mise à jour: 5 months ago

> REFERENCES

https://grafana.com/security/security-advisories/cve-2026-33376
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