Security readout for executives and security teams
Plain-English summary
A user trusted to manage permissions for one Grafana dashboard may be able to read or change permissions on other dashboards in the same organization. This can expose restricted information and expand internal access without user interaction. The attacker must already have a low-privileged authenticated account with dashboard permission-management rights.
Executive priority
Prioritize prompt exposure verification because successful abuse could compromise sensitive dashboard access and authorization boundaries. Escalate remediation where delegated dashboard administrators exist. Do not assume the named versions are vulnerable: the supplied records mark them unaffected, while the actual affected and fixed ranges are absent from the bundle.
Technical view
The dashboard permissions API checks the dashboards.permissions:* action but reportedly fails to verify authorization against the requested dashboard. This object-scope authorization flaw aligns with CWE-639 and CWE-863. The supplied CVSS 3.1 score is 8.1, reflecting high confidentiality and integrity impact without availability impact.
Likely exposure
Exposure depends on running an affected Grafana build and granting users dashboard permission-management capabilities. However, the supplied product entries mark the listed Grafana and Grafana Enterprise versions as unaffected and identify no affected range. Organizations must consult current vendor guidance and verify exact builds before concluding they are exposed.
Exploitation context
The issue is remotely reachable over the network but requires authenticated, low-privileged access and no user interaction. It represents organization-internal privilege escalation rather than unauthenticated compromise. The bundle states that CVE-2026-21721 is not in KEV and provides no evidence of active exploitation.
Researcher notes
The core defect is missing resource-level authorization after an action-level permission check. Assessment should distinguish possession of dashboards.permissions:* from authorization for the target dashboard. The supplied version data is insufficient to reproduce or delimit exposure. No public exploit, active exploitation, or specific fixed release is established by the provided evidence.
Mitigation direction
- Check Grafana and relevant Red Hat advisories for confirmed affected ranges and vendor-supported updates.
- Apply the applicable vendor update after matching the deployed product, build, and package.
- Temporarily remove dashboard permission-management rights from users who do not strictly require them.
- Monitor dashboard permission activity for access outside each administrator's assigned scope.
Validation and detection
- Inventory exact Grafana, Grafana Enterprise, and downstream package versions across all environments.
- Compare each exact build against current Grafana and applicable Red Hat advisories.
- Enumerate accounts holding dashboards.permissions:* capabilities and document their intended dashboard scopes.
- Review audit records for unexpected permission reads or changes across dashboard boundaries.
- After remediation, verify in authorized testing that scoped administrators cannot manage unrelated dashboard permissions.
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-639: 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 lookupCWE-863: 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-2026-21721 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
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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
2 official scoresWe 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:H/I:H/A:N2.85.2GRAFANACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N2.85.2redhat-SADPVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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.
- ADP timelineredhat-SADP
Made public.
- CVE publishedCVE Program
The CVE record was published.
- ADP timelineredhat-SADP
Reported to Red Hat.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2026-01-27T10:02:34.317Z: Reported to Red Hat.
- 2026-01-27T09:07:55.160Z: Made public.
Source materials
- CVE List V5 sourceCVE List V5
- https://grafana.com/security/security-advisories/cve-2026-21721CVE reference, GRAFANA · vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-21721CVE reference, redhat-SADP · vdb-entry, x_refsource_REDHAT
- RHBZ#2433242CVE reference, redhat-SADP · issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21721.jsonCVE reference, redhat-SADP · x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:3078CVE reference, redhat-SADP · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:2914CVE reference, redhat-SADP · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:3529CVE reference, redhat-SADP · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:2920CVE reference, redhat-SADP · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:41064CVE reference, redhat-SADP · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:5633CVE reference, redhat-SADP · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:8229CVE reference, redhat-SADP · vendor-advisory, x_refsource_REDHAT
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.
Authorization Bypass Through User-Controlled Key
Authorization Bypass Through User-Controlled Key represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.