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CVE-2026-33376Auth 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.

Timeline

  1. ID reserved

    By GRAFANA

  2. · 55 days later

    Published

  3. · 4 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-33376, by who scored it
Scored byCVSSScoreVector
GRAFANACNA (assigner)3.1High7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVDNVD · Analyzed3.1High7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS (exploitation in 30 days)
0.28% · top 79% of all CVEs (14 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.

Affected products

  • Grafana · Grafana OSS

    • affected 9.4.0 – ≤ 11.6.14
    • affected 11.6.14 – < 11.6.14+security-04
    • affected 12.0.0 – ≤ 12.2.8
    • affected 12.2.8 – < 12.2.8+security-04
    • affected 12.3.0 – ≤ 12.3.6
    • affected 12.3.6 – < 12.3.6+security-04
    • affected 12.4.0 – ≤ 12.4.3
    • affected 12.4.3 – < 12.4.3+security-02
    • affected 13.0.0 – ≤ 13.0.1
    • affected 13.0.1 – < 13.0.1+security-01

References

References1

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .