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CVE-2026-33376

⚠ī¸ high
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Summary

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 Score
7.4
High
EPSS Score
0.0
Exploit Probability
Published Date
2026-05-13
First Seen: 2026-05-17
📊 Relative Risk Intelligence

This CVE is Moderate Risk - more severe than 55.9% of all 365,312 vulnerabilities in our database.

#161,250
Above average severity
Severity Percentile
đŸŽ¯ CISA SSVC Assessment Updated: May 15, 2026
🔍 Exploitation Status
None
No known exploits
⚙ī¸ Automatable
NO
Requires human interaction
đŸ’Ĩ Technical Impact
Total
Complete system compromise possible
SSVC data provided by CISA
Last Modified 2026-06-02
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE IDs (Weakness Types)
CWE-1188

đŸ“Ļ Affected Products 10

Vendor Product Status Affected Versions
grafana grafana Affected
> 8.5.0 < 11.6.14
grafana grafana Affected
> 12.2.0 < 12.2.8
grafana grafana Affected
> 12.3.0 < 12.3.6
grafana grafana Affected
> 12.4.0 < 12.4.3
grafana grafana Affected
v11.6.14
grafana grafana Affected
v12.2.8
grafana grafana Affected
v12.3.6
grafana grafana Affected
v12.4.3
grafana grafana Affected
v13.0.0
grafana grafana Affected
v13.0.1

🔗 References 1

https://grafana.com/security/security-advisories/cve...
Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-14199 ⚠ī¸ high 7.1 0.3 Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than z... 2026-09-02
CVE-2026-33382 ⚠ī¸ high 7.5 0.4 Several Grafana API endpoints, some of them unauthenticated, do not limit the size of the request body before processing... 2026-07-10
CVE-2026-8595 đŸ”ļ medium 6.8 0.2 A user with Editor permissions can craft a dashboard whose table (TableNG) panel contains a malicious field name that ex... 2026-07-10
CVE-2026-8609 đŸ”ļ medium 5.3 0.4 An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory... 2026-07-10
CVE-2026-28378 ℹī¸ low 3.1 0.1 The public dashboard deletion endpoint does not enforce organization isolation, allowing an Org Admin in one organizatio... 2026-07-07
CVE-2026-10601 đŸ”ļ medium 5.4 0.3 A user with Viewer permissions can use specially crafted requests to the Tempo and Loki data source plugins to reach uni... 2026-06-22
These CVEs affect the same products