Is CVE-2026-28383 in the CISA KEV catalog?

No. CVE-2026-28383 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-28383?

CVE-2026-28383 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-28383?

CVE-2026-28383 has an EPSS score of 0.33% (25th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-28383?

Upgrade GrafanaEnterprise to 12.3.6 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2026-28383

MEDIUM

6.5

CVSS v3

NVD

Description

A request to the Grafana plugin resources endpoint can cause unbounded memory allocation by reading the entire request body into memory. An authenticated user can exploit this to trigger an out-of-memory condition, potentially causing a denial of service.

CWE-770Allocation of Resources Without Limits or Throttling

How to fix

Remediation Available

GrafanaEnterpriseWindows application

Affected:12.3.0 12.3.6Fixed in:12.3.6Grafana Labs

Affected:8.5.0 11.6.14Fixed in:11.6.14Grafana Labs

Affected:12.2.0 12.2.8Fixed in:12.2.8Grafana Labs

Affected:12.4.0 12.4.3Fixed in:12.4.3Grafana Labs

GrafanaOSSWindows application

Affected:12.2.0 12.2.8Fixed in:12.2.8Grafana Labs

Affected:12.3.0 12.3.6Fixed in:12.3.6Grafana Labs

Affected:12.4.0 12.4.3Fixed in:12.4.3Grafana Labs

Affected:8.5.0 11.6.14Fixed in:11.6.14Grafana Labs

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.33%probability of exploitation in 30 days

25thpercentile

Low risk: more likely to be exploited than 25% of all known CVEs.

References

Vendor Advisory1

grafana.com

Related Vulnerabilities

Other CWE-770 (Allocation of Resources Without Limits or Throttling) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-50387	High	7.5	100%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2019-11479	High	7.5	92%	-	Fix
CVE-2024-27316	High	7.5	91%	-	Fix
CVE-2022-30522	High	7.5	90%	-	Fix
CVE-2019-9515	High	7.5	88%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-02.