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PatchSiren cyber security CVE debrief

CVE-2026-33381 Grafana CVE debrief

CVE-2026-33381 is a vulnerability in Grafana that allows users to mint tokens for a service account for a short period after their access has been revoked. The vulnerability has a CVSS score of 5.9 and is classified as MEDIUM severity. Grafana has released an advisory for this vulnerability.

Vendor
Grafana
Product
Grafana OSS
CVSS
MEDIUM 5.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-13
Original CVE updated
2026-06-17
Advisory published
2026-05-13
Advisory updated
2026-06-17

Who should care

Users of Grafana, especially those who have configured service accounts and token management, should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability occurs when a user's access to mint tokens for a service account is revoked. For a few seconds after the revocation event, the user may still be able to mint tokens. Eventually, the user will lose access to this functionality.

Defensive priority

MEDIUM

Recommended defensive actions

  • Users should update Grafana to a version that patches this vulnerability. Affected versions include Grafana 11.6.0 to 11.6.14, 12.2.0 to 12.2.8, 12.3.0 to 12.3.6, 12.4.0 to 12.4.3, and 13.0.0 to 13.0.1.
  • Refer to the vendor advisory at resourceLinkAnnotations with id 'ref-4' for detailed mitigation strategies and patch information.

Evidence notes

The CVE record and details are sourced from official databases and Grafana's security advisory.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-33381 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-33381

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-33381 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-33381

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.