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Fencer Vulns
high 7.5

CVE-2021-28148 json

One of the usage insights HTTP API endpoints in Grafana Enterprise 6.x before 6.7.6, 7.x before 7.3.10, and 7.4.x before 7.4.5 is accessibl…

published 2021-03-22 5 y ago modified 2026-09-08 2 mo ago also BIT-grafana-2021-28148 , EUVD-2021-14846

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.5%
EPSS 3.5% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

One of the usage insights HTTP API endpoints in Grafana Enterprise 6.x before 6.7.6, 7.x before 7.3.10, and 7.4.x before 7.4.5 is accessible without any authentication. This allows any unauthenticated user to send an unlimited number of requests to the endpoint, leading to a denial of service (DoS) attack against a Grafana Enterprise instance.

Patch / fix

  • bitnami grafana 6.7.6, 7.3.10, 7.4.5
  • grafana grafana 6.7.6, 7.3.10, 7.4.5
  • rhnlib Manager Client Tools 15 4.2.4-3.28.1
  • ansible Manager Client Tools 15 2.9.21-1.5.1
  • mgr-cfg Manager Client Tools 15 4.2.3-1.18.1
  • mgr-osad Manager Client Tools 15 4.2.6-1.30.1
  • mgr-push Manager Client Tools 15 4.2.3-1.12.1
  • spacecmd Manager Client Tools 15 4.2.11-3.62.1
  • spacewalk-koan Manager Client Tools 15 4.2.4-3.21.1
  • dracut-saltboot Manager Client Tools 15 0.1.1627546504.96a0b3e-1.27.1

suse advisories SUSE-SU-2021:2675-1SUSE-SU-2021:2673-1SUSE-SU-2021:2660-1

  • grafana openSUSE Tumbleweed 7.5.7-1.2
  • ansible openSUSE Leap 15.2 2.9.21-lp152.2.7.1
  • dracut-saltboot openSUSE Leap 15.2 0.1.1627546504.96a0b3e-lp152.2.26.1
  • golang-github-prometheus-prometheus openSUSE Leap 15.2 2.27.1-lp152.3.13.1
  • grafana openSUSE Leap 15.2 7.5.7-lp152.2.16.1
  • rhnlib openSUSE Leap 15.3 4.2.4-3.28.1
  • ansible openSUSE Leap 15.3 2.9.21-1.5.1
  • mgr-cfg openSUSE Leap 15.3 4.2.3-1.18.1

opensuse advisories openSUSE-SU-2024:10818-1openSUSE-SU-2021:1162-1openSUSE-SU-2021:1148-1openSUSE-SU-2021:2675-1openSUSE-SU-2021:2662-1

  • grafana Alpine 3.24, Alpine 3.23, Alpine 3.22 +8 more 7.4.5-r0

alpine advisories ALPINE-CVE-2021-28148

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2021-28148 updated cvss 7.5

grafana: usage insights API endpoint doesn't limit number of requests which could result in DoS

  • Red Hat OpenShift Service Mesh 1 servicemesh-grafana, servicemesh-grafana-prometheus Red Hat OpenShift Service Mesh 2.0 servicemesh-grafana, servicemesh-grafana-prometheus Red Hat Advanced Cluster Management for Kubernetes 2 grafana Red Hat Ceph Storage 2 grafana Red Hat Ceph Storage 3 grafana, grafana-container Red Hat Ceph Storage 4 rhceph/rhceph-4-dashboard-rhel8
    +5 more products
    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 Red Hat OpenShift Container Platform 3.11 openshift3/grafana Red Hat OpenShift Container Platform 4 openshift4/ose-grafana Red Hat Storage 3 grafana
    not affected: vulnerable code 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

Exploit prediction

3.50% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami grafana
>=6.0.0, <6.7.6
>=7.0.0, <7.3.10
>=7.4.0, <7.4.5
6.7.6
7.3.10
7.4.5

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

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.