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CVE-2026-33376

CVE-2026-33376 · Auth Proxy IPv6 whitelist bypass

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 7.4 · High · EPSS 0.3%

Published
Updated

Stack: system · applications

Affected products and versions

  • grafana

    Versions
    • ≥ 9.4.0, ≤ 11.6.14: Affected (semver)
    • ≥ 11.6.14, < 11.6.14+security-04: Affected (custom)
    • ≥ 12.0.0, ≤ 12.2.8: Affected (semver)
    • ≥ 12.2.8, < 12.2.8+security-04: Affected (custom)
    • ≥ 12.3.0, ≤ 12.3.6: Affected (semver)
    • ≥ 12.3.6, < 12.3.6+security-04: Affected (custom)
    • ≥ 12.4.0, ≤ 12.4.3: Affected (semver)
    • ≥ 12.4.3, < 12.4.3+security-02: Affected (custom)
    • ≥ 13.0.0, ≤ 13.0.1: Affected (semver)
    • ≥ 13.0.1, < 13.0.1+security-01: Affected (custom)

    No fix published

  • grafana Ubuntu:16.04:LTS

    Versions
    • 2.6.0+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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