Security readout for executives and security teams
Plain-English summary
An authenticated Grafana Editor who can write to another owner’s dashboard may overwrite it during import and become administrator of that dashboard. This can expose dashboard information and enable unauthorized, high-impact changes, but the reported escalation is limited to the affected dashboard.
Executive priority
Prioritize remediation for shared or externally reachable Grafana environments with multiple Editors. The vulnerability enables significant unauthorized dashboard changes but requires authenticated access and existing write permission. Address promptly as a high-severity access-control issue; immediate emergency response is unsupported without evidence of exploitation or suspicious local activity.
Technical view
CVE-2026-33377 is a CWE-284 authorization flaw in Grafana OSS dashboard import handling. It permits a low-privileged, network-accessible Editor with existing dashboard write access to overwrite authorization settings and gain dashboard-specific admin rights. CVSS 3.1 rates it 7.1, with low confidentiality impact, high integrity impact, and no stated availability impact.
Likely exposure
Exposure is limited to the listed Grafana OSS versions where users have Editor privileges and write access to dashboards they do not own. The source bundle marks other versions unaffected by default, but administrators should verify their exact build and configuration against Grafana’s advisory.
Exploitation context
Exploitation requires an authenticated Editor account and pre-existing write access to the targeted dashboard. No user interaction is required. The source bundle does not report public exploitation, and the CVE is not listed as KEV. No broader organization-level or server-level administration is established by the supplied evidence.
Researcher notes
The affected list names Grafana OSS versions 8.5.0, 11.6.14, 12.0.0, 12.2.8, 12.3.0, 12.3.6, 12.4.0, 12.4.3, 13.0.0, and 13.0.1. The supplied evidence does not define affected ranges, fixed versions, exploit availability, or cloud-product exposure, so those points should not be inferred.
Mitigation direction
- Identify deployments running the specifically listed Grafana OSS versions.
- Check Grafana’s advisory for confirmed fixed releases or vendor-approved remediation.
- Upgrade according to current vendor guidance after testing operational compatibility.
- Restrict Editor assignments and cross-owner dashboard write access until remediation is complete.
- Monitor dashboard imports, ownership changes, and permission changes for suspicious activity.
Validation and detection
- Record the exact Grafana OSS version for every deployment.
- Review which Editors can write to dashboards owned by other users.
- Audit dashboard ownership and ACL changes for unexpected administrator grants.
- Confirm deployed remediation against Grafana’s advisory and approved release notes.
- Recheck Editor permissions after upgrading or applying vendor guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-33377 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N2.84.2GRAFANAVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://grafana.com/security/security-advisories/cve-2026-33377CVE reference, GRAFANA · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.