Security readout for executives and security teams
Plain-English summary
CVE-2026-28375 is an availability flaw in Grafana’s testdata datasource. A low-privileged remote user can trigger excessive memory allocation, causing Grafana to crash from out-of-memory conditions. The business impact is service disruption rather than data theft or tampering, based on the provided sources.
Executive priority
Prioritize remediation for internet-facing or multi-user Grafana environments. This is not described as data compromise, but it can interrupt monitoring and dashboards, which may degrade incident response and operations visibility.
Technical view
The CVE describes CWE-400 uncontrolled resource consumption in Grafana’s testdata datasource. CVSS 3.1 is 6.5: network attack vector, low complexity, low privileges required, no user interaction, and high availability impact. The bundle lists Grafana versions 8.1.0, 12.0.0, 12.2.0, 12.3.0, and 12.4.0 as affected entries.
Likely exposure
Exposure is most likely where Grafana is reachable over a network and authenticated low-privileged users can interact with the testdata datasource. The bundle does not identify specific deployment configurations, fixed versions, or default datasource exposure details.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. The described impact is denial of service through memory exhaustion. Treat public or broadly accessible Grafana instances as higher priority because the CVSS vector requires only low privileges.
Researcher notes
Evidence is limited to the CVE description, CVSS data, KEV status, and Grafana advisory reference in the bundle. Do not assume exploit availability, fixed versions, or exact mitigations without consulting the vendor advisory.
Mitigation direction
- Review Grafana’s advisory for fixed releases or supported mitigations.
- Upgrade affected Grafana deployments according to Grafana guidance when available.
- Limit Grafana access to trusted users and networks during remediation.
- Review low-privileged user access to datasource functionality.
- Monitor Grafana hosts for out-of-memory crashes and repeated availability failures.
Validation and detection
- Inventory Grafana versions and compare them with the affected CVE entries.
- Identify deployments reachable by low-privileged authenticated users.
- Check whether the testdata datasource is enabled or usable in production instances.
- Review logs for testdata datasource activity near memory exhaustion events.
- Confirm remediation status against Grafana’s vendor advisory.
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-400: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCVE-2026-28375 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-2026-28375CVE 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.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.