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Back to active CVEs
High · CVSS 7.4CVE-2026-33376

Auth Proxy IPv6 whitelist bypassCVE-2026-33376

Answer in brief

CVE-2026-33376 records a High severity (CVSS 7.4) vulnerability in Auth Proxy IPv6 whitelist bypass. The current sources do not mark it as known exploited. The current feed maps Grafana/Grafana OSS (generic), Grafana/Grafana OSS (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 13, 2026Updated Oct 26, 2026Source checked Nov 10, 2026First seen by HOL Aug 11, 2026Material review Oct 26, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.4
Exploitation
Not marked as known exploited
Affected software
12 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Grafana/Grafana OSS (generic), Grafana/Grafana OSS (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:grafana:grafana:11.6.14:-:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:grafana:grafana:11.6.14:security01:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:grafana:grafana:12.2.8:-:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:grafana:grafana:12.2.8:security01:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:grafana:grafana:12.3.6:-:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:grafana:grafana:12.3.6:security01:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:grafana:grafana:12.4.3:-:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:grafana:grafana:13.0.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:grafana:grafana:13.0.1:-:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Grafana/Grafana OSSgeneric9.4.0 || >=11.6.14 <11.6.14+security-04 || 12.0.0 || >=12.2.8 <12.2.8+security-04 || 12.3.0 || >=12.3.6 <12.3.6+security-04 || 12.4.0 || >=12.4.3 <12.4.3+security-02 || 13.0.0 || >=13.0.1 <13.0.1+security-0111.6.14+security-04, 12.2.8+security-04, 12.3.6+security-04, 12.4.3+security-02, 13.0.1+security-01
Grafana/Grafana OSSgeneric>=9.4.0 <=11.6.14 || >=11.6.14 <11.6.14+security-04 || >=12.0.0 <=12.2.8 || >=12.2.8 <12.2.8+security-04 || >=12.3.0 <=12.3.6 || >=12.3.6 <12.3.6+security-04 || >=12.4.0 <=12.4.3 || >=12.4.3 <12.4.3+security-02 || >=13.0.0 <=13.0.1 || >=13.0.1 <13.0.1+security-0111.6.14+security-04, 12.2.8+security-04, 12.3.6+security-04, 12.4.3+security-02, 13.0.1+security-01

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Grafana/Grafana OSS, Grafana/Grafana OSS.
  2. 2Review the reported fix. Update Grafana/Grafana OSS to 11.6.14+security-04; Grafana/Grafana OSS to 11.6.14+security-04 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    May 13, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 11, 2026

Sources and claim methodology

  • Source referencegrafana.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • pgEdge Control Plane generates pg_hba.conf with trust authentication for local and loopback connectionsAlso CWE-1188

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-1188
Source
CVE List V5
Source checked
Nov 10, 2026
References
1 linked source
Open source record