CVE-2026-28376Network attack vector

Authenticated service crash via unbounded Live request body

Published May 13, 2026 · Updated May 13, 2026

Denial of service in Grafana OSS affected releases allows remote authenticated users to crash the server via the Live push API. The Live push handler accepts a large or streaming HTTP request body without a size bound and allocates memory as that body arrives. Access to the authenticated Grafana Live API is required; sustained allocation exhausts process memory and terminates the Grafana service.

CVSS severity6.5
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Grafana OSS affected releases allows remote authenticated users to crash the server via the Live push API. The Live push handler accepts a large or streaming HTTP request body without a size bound and allocates memory as that body arrives. Access to the authenticated Grafana Live API is required; sustained allocation exhausts process memory and terminates the Grafana service.

The record

CVE
CVE-2026-28376
Published
May 13, 2026
Updated
May 13, 2026
Vendor
Grafana Labs
Product
Grafana OSS
Classifications
CWE-770, CAPEC-130, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.6.14 <11.6.14+security-04
  2. Affected versionversion=12.0.0 <=12.2.8
  3. Affected versionversion=12.2.8 <12.2.8+security-04
  4. Affected versionversion=12.3.0 <=12.3.6
  5. Affected versionversion=12.3.6 <12.3.6+security-04
  6. Affected versionversion=12.4.0 <=12.4.3
  7. Affected versionversion=12.4.3 <12.4.3+security-02
  8. Affected versionversion=13.0.0 <=13.0.1
  9. Affected versionversion=13.0.1 <13.0.1+security-01
  10. Affected versionversion=8.0.0 <=11.6.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Grafana Labs · Grafana OSSversion=11.6.14 <11.6.14+security-04; version=12.0.0 <=12.2.8; version=12.2.8 <12.2.8+security-04; version=12.3.0 <=12.3.6; version=12.3.6 <12.3.6+security-04; version=12.4.0 <=12.4.3; version=12.4.3 <12.4.3+security-02; version=13.0.0 <=13.0.1; version=13.0.1 <13.0.1+security-01; version=8.0.0 <=11.6.14

Published CVSS scores

6.5Grafana LabsCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
CAPEC-130Excessive Allocation
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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