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Fencer Vulns
medium 6.5

CVE-2026-28383 json

Grafana plugin resources can lead to unbounded memory allocation

published 2026-05-13 5 mo ago modified 2026-10-26 14 d ago also BIT-grafana-2026-28383 , EUVD-2026-30141

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami grafana 11.6.14, 12.2.8, 12.3.6, 12.4.3, 13.0.1
  • Grafana Grafana OSS 11.6.14+security-04, 12.2.8+security-04, 12.3.6+security-04, 12.4.3+security-02, 13.0.1+security-01
  • grafana12.4 hummingbird 1 12.4.10-0.6.hum1
  • grafana13.2 hummingbird 1 13.2.1-0.5.hum1
  • grafana13.1 hummingbird 1 13.1.6-0.1.hum1

red hat advisories RHSA-2026:68821RHSA-2026:68778RHSA-2026:68767

  • grafana SLE Module for Package Hub 15 SP7 12.4.5-150200.3.91.1
  • uyuni-tools Multi-Linux Manager Server Extension for SLE 5.1, Multi-Linux Manager Proxy Extension for SLE 5.1 5.1.29-150700.3.26.1
  • suse-multi-linux-manager-5.1-s390x-server-image Multi-Linux Manager Server Extension for SLE 5.1 5.1.4-8.20.34
  • suse-multi-linux-manager-5.1-x86_64-server-image Multi-Linux Manager Server Extension for SLE 5.1 5.1.4-8.20.34
  • suse-multi-linux-manager-5.1-aarch64-server-image Multi-Linux Manager Server Extension for SLE 5.1 5.1.4-8.20.34
  • suse-multi-linux-manager-5.1-ppc64le-server-image Multi-Linux Manager Server Extension for SLE 5.1 5.1.4-8.20.34
  • suse-multi-linux-manager-5.1-s390x-proxy-ssh-image Multi-Linux Manager Proxy Extension for SLE 5.1 5.1.4-8.20.12
  • suse-multi-linux-manager-5.1-x86_64-proxy-ssh-image Multi-Linux Manager Proxy Extension for SLE 5.1 5.1.4-8.20.12

suse advisories SUSE-SU-2026:3718-1SUSE-SU-2026:2774-1SUSE-SU-2026:2768-1

  • grafana openSUSE Leap 16.0 11.6.14+security04-bp160.1.1
  • grafana openSUSE Tumbleweed 11.6.14+security04-1.1

opensuse advisories openSUSE-SU-2026:20940-1openSUSE-SU-2026:10932-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-28383 updated cvss 6.5

grafana: Grafana: Denial of Service via unbounded memory allocation in plugin resources endpoint

  • Red Hat Multicluster Global Hub multicluster-globalhub/multicluster-globalhub-grafana-rhel9 Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/acm-grafana-rhel9 Red Hat Ceph Storage 8 rhceph/grafana-rhel9 Red Hat Ceph Storage 9 rhceph/grafana-rhel10 Red Hat Enterprise Linux 8 grafana, grafana-loki, grafana-mssql, grafana-mysql, grafana-selinux, grafana-graphite, +8 more Red Hat Enterprise Linux 9 grafana, grafana-selinux
    +1 more products
    Red Hat Enterprise Linux 10 grafana
    affected: no fix available “Fix deferred”
  • Red Hat Hardened Images grafana13.1 13.1.6-0.1.hum1, grafana13.2 13.2.1-0.5.hum1, grafana12.4 12.4.10-0.6.hum1
    fixed: vendor fix RHSA-2026:68821
  • Red Hat Ceph Storage 5 rhceph/rhceph-5-dashboard-rhel8 Red Hat Ceph Storage 6 rhceph/rhceph-6-dashboard-rhel9
    not affected: vulnerable code not present
  • Red Hat Hardened Images hi/grafana
    not affected: component not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
5 mo ago

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami grafana
>=6.7.0, <11.6.14
>=12.0.0, <12.2.8
>=12.3.0, <12.3.6
>=12.4.0, <12.4.3
>=13.0.0, <13.0.1
11.6.14
12.2.8
12.3.6
12.4.3
13.0.1

Affected products

  • Grafana Grafana OSS

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.