BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2026
CVE-2026-28379High confidence

Viewer-triggered race condition in Grafana Live leads to complete server crash

Grafana · Grafana OSS

6.5MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Medium, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 0.32% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Grafana Grafana OSS and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: As exposure requiresRemediation target: Within 365 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-28379 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitygrafana: Grafana Live: Denial of Service due to a race condition
24 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub
  • rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2
  • rhceph/grafana-rhel10 as a component of Red Hat Ceph Storage 9
  • grafana as a component of Red Hat Enterprise Linux 10
  • grafana-selinux as a component of Red Hat Enterprise Linux 10
  • grafana.src as a component of Red Hat Enterprise Linux 10
  • grafana as a component of Red Hat Enterprise Linux 8
  • grafana-azure-monitor as a component of Red Hat Enterprise Linux 8
  • grafana-cloudwatch as a component of Red Hat Enterprise Linux 8
  • grafana-elasticsearch as a component of Red Hat Enterprise Linux 8
  • grafana-graphite as a component of Red Hat Enterprise Linux 8
  • grafana-influxdb as a component of Red Hat Enterprise Linux 8
Summary
A flaw was found in Grafana Live, where a race condition allows authenticated users with a Viewer role to trigger a server crash. By sending concurrent requests, these users can cause a fatal map access error, leading to complete service unavailability (Denial of Service). This requires a restart of the Grafana server to restore service.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-30139

No EUVD known-exploited evidence

A race condition in Grafana Live allows authenticated users with Viewer role to trigger a server crash by sending concurrent requests that cause a fatal map access error. This results in complete service unavailability requiring restart of the Grafana server.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
6.5 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

A race condition in Grafana Live allows authenticated users with Viewer role to trigger a server crash by sending concurrent requests that cause a fatal map access error. This results in complete service unavailability requiring restart of the Grafana server.

What

A race condition in Grafana Live allows authenticated users with Viewer role to trigger a server crash by sending concurrent requests that cause a fatal map access error. This results in complete service unavailability requiring restart of the Grafana server.

Why

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

What

A race condition in Grafana Live allows authenticated users with Viewer role to trigger a server crash by sending concurrent requests that cause a fatal map access error. This results in complete service unavailability requiring restart of the Grafana server.

Why

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') → disrupt the affected service
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-362 ↗

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'). The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkDenial of serviceCWE-362
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-30139Official EUVD mapping

A race condition in Grafana Live allows authenticated users with Viewer role to trigger a server crash by sending concurrent requests that cause a fatal map access error. This results in complete service unavailability requiring restart of the Grafana server.

Official EUVD record ↗
BSI · German · WID-SEC-2026-1546Grafana: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Grafana ausnutzen, um erweiterte Privilegien zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260520Security Bulletin 20 May 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 20 May 2026, published on 20 May 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-017616Grafana LabsのGrafanaにおける競合状態に関する脆弱性

Grafana Liveのレースコンディションにより、Viewerロールを持つ認証ユーザーが致命的なマップアクセスエラーを引き起こす同時リクエストを送信することでサーバークラッシュを引き起こす可能性があります。これにより、Grafanaサーバーが再起動を必要とする完全なサービス停止が発生します。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Fixed
Action
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 13 May 2026 · Last source change 27 Aug 2026, 17:22 UTC · CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-30139
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCISA ADP
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    8.2.0 ≤ 11.6.14; 11.6.14 < 11.6.14+security-04; 12.0.0 ≤ 12.2.8; 12.2.8 < 12.2.8+security-04; 12.3.0 ≤ 12.3.6; 12.3.6 < 12.3.6+security-04; 12.4.0 ≤ 12.4.3; 12.4.3 < 12.4.3+security-02 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    8.2.0 ≤ 11.6.14; 11.6.14 < 11.6.14+security-04; 12.0.0 ≤ 12.2.8; 12.2.8 < 12.2.8+security-04; 12.3.0 ≤ 12.3.6; 12.3.6 < 12.3.6+security-04; 12.4.0 ≤ 12.4.3; 12.4.3 < 12.4.3+security-02 · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
    Red Hat Product Security ↗
  2. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-28379 to remediation: access.redhat.com/CVE-2026-28379.
    Before
    remediation: access.redhat.com/CVE-2026-28379
    After
    remediation: access.redhat.com/CVE-2026-28379
    Red Hat Product Security ↗
  3. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    Red Hat Product Security ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhceph/grafana-rhel10 as a component of Red Hat Ceph Storage 9; grafana as a component of Red Hat Enterprise Linux 10; grafana-selinux as a component of Red Hat Enterprise Linux 10; grafana.src as a component of Red Hat Enterprise Linux 10; grafana as a component of Red Hat Enterprise Linux 8; grafana-azure-monitor as a component of Red Hat Enterprise Linux 8; grafana-cloudwatch as a component of Red Hat Enterprise Linux 8; grafana-elasticsearch as a component of Red Hat Enterprise Linux 8; grafana-graphite as a component of Red Hat Enterprise Linux 8; grafana-influxdb as a component of Red Hat Enterprise Linux 8; grafana-loki as a component of Red Hat Enterprise Linux 8; grafana-mssql as a component of Red Hat Enterprise Linux 8; grafana-mysql as a component of Red Hat Enterprise Linux 8; grafana-opentsdb as a component of Red Hat Enterprise Linux 8; grafana-postgres as a component of Red Hat Enterprise Linux 8; grafana-prometheus as a component of Red Hat Enterprise Linux 8; grafana-selinux as a component of Red Hat Enterprise Linux 8; grafana-stackdriver as a component of Red Hat Enterprise Linux 8; grafana.src as a component of Red Hat Enterprise Linux 8; grafana as a component of Red Hat Enterprise Linux 9; grafana-selinux as a component of Red Hat Enterprise Linux 9; grafana.src as a component of Red Hat Enterprise Linux 9; grafana12.4.src as a component of Red Hat Hardened Images; grafana13.1.src as a component of Red Hat Hardened Images; grafana13.2.src as a component of Red Hat Hardened Images
    After
    multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhceph/grafana-rhel10 as a component of Red Hat Ceph Storage 9; grafana as a component of Red Hat Enterprise Linux 10; grafana-selinux as a component of Red Hat Enterprise Linux 10; grafana.src as a component of Red Hat Enterprise Linux 10; grafana as a component of Red Hat Enterprise Linux 8; grafana-azure-monitor as a component of Red Hat Enterprise Linux 8; grafana-cloudwatch as a component of Red Hat Enterprise Linux 8; grafana-elasticsearch as a component of Red Hat Enterprise Linux 8; grafana-graphite as a component of Red Hat Enterprise Linux 8; grafana-influxdb as a component of Red Hat Enterprise Linux 8; grafana-loki as a component of Red Hat Enterprise Linux 8; grafana-mssql as a component of Red Hat Enterprise Linux 8; grafana-mysql as a component of Red Hat Enterprise Linux 8; grafana-opentsdb as a component of Red Hat Enterprise Linux 8; grafana-postgres as a component of Red Hat Enterprise Linux 8; grafana-prometheus as a component of Red Hat Enterprise Linux 8; grafana-selinux as a component of Red Hat Enterprise Linux 8; grafana-stackdriver as a component of Red Hat Enterprise Linux 8; grafana.src as a component of Red Hat Enterprise Linux 8; grafana as a component of Red Hat Enterprise Linux 9; grafana-selinux as a component of Red Hat Enterprise Linux 9; grafana.src as a component of Red Hat Enterprise Linux 9 · Fixed: grafana12.4-0:12.4.10-0.6.hum1@aarch64 as a component of Red Hat Hardened Images; grafana12.4-0:12.4.10-0.6.hum1@src as a component of Red Hat Hardened Images; grafana12.4-0:12.4.10-0.6.hum1@x86_64 as a component of Red Hat Hardened Images; grafana13.1-0:13.1.6-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; grafana13.1-0:13.1.6-0.1.hum1@src as a component of Red Hat Hardened Images; grafana13.1-0:13.1.6-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; grafana13.2-0:13.2.1-0.5.hum1@aarch64 as a component of Red Hat Hardened Images; grafana13.2-0:13.2.1-0.5.hum1@src as a component of Red Hat Hardened Images; grafana13.2-0:13.2.1-0.5.hum1@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2026-30139↗Red Hat Product Security security advisory↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-28379 · cve.blacktree.nl