Security readout for executives and security teams
Plain-English summary
An authenticated Grafana user with the low-privilege Viewer role can crash an affected server, making dashboards and monitoring unavailable until the service is restarted. The issue threatens availability only; the supplied evidence does not indicate data theft or modification.
Executive priority
Prioritize prompt remediation for production Grafana systems supporting incident response, operations, or customer services. Treat externally reachable deployments and broadly distributed Viewer access as more urgent. This is not a demonstrated breach risk, but repeated crashes could materially impair monitoring and operational visibility.
Technical view
CVE-2026-28379 is a CWE-362 race condition in Grafana Live. Concurrent network requests from an authenticated Viewer can cause a fatal map-access error, terminating the Grafana server. Its CVSS 3.1 score is 6.5: low privileges and no user interaction are required, with high availability impact but no stated confidentiality or integrity impact.
Likely exposure
Exposure exists where a listed Grafana OSS version is deployed and untrusted or compromised accounts have Viewer access. Internet reachability can increase opportunity, but authentication remains required. The supplied affected-version data lists specific releases and otherwise marks versions unaffected; confirm applicability against Grafana's advisory.
Exploitation context
The source bundle does not report active exploitation, and this CVE is not identified as CISA KEV. Exploitation requires valid low-privilege credentials and concurrent requests. A successful attempt causes denial of service requiring restart; no evidence supplied supports data access, privilege escalation, or persistent compromise.
Researcher notes
The reported flaw is an authenticated, network-reachable race condition in Grafana Live producing a fatal map-access error. CVSS indicates low attack complexity and high availability impact. The supplied sources do not establish exploitation in the wild, precise request mechanics, affected configuration prerequisites, or a specific fixed version; consult the vendor advisory for those details.
Mitigation direction
- Review Grafana's advisory for fixed releases or vendor-approved mitigations.
- Upgrade affected Grafana OSS installations according to current vendor guidance.
- Restrict Viewer accounts to trusted users and remove unnecessary access.
- Limit external access to Grafana and enforce strong authentication.
- Maintain restart procedures while remediation is pending.
Validation and detection
- Inventory Grafana OSS versions across production and recovery environments.
- Compare installed releases with the advisory's affected-version information.
- Review Viewer-role assignments and disable stale or untrusted accounts.
- Check service logs for fatal map-access errors and unexpected restarts.
- Confirm monitoring and dashboards recover correctly after remediation.
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-362: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-28379 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
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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:N/I:N/A:H2.83.6GRAFANAVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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-2026-28379CVE 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.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.