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Fencer Vulns
high 8.1

CVE-2026-21721 json

Dashboard Permissions Scope Bypass Enables Cross‑Dashboard Privilege Escalation

published 2026-01-27 9 mo ago modified 2026-09-08 2 mo ago also BIT-grafana-2026-21721 , EUVD-2026-4820

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

The dashboard permissions API does not verify the target dashboard scope and only checks the dashboards.permissions:* action. As a result, a user who has permission management rights on one dashboard can read and modify permissions on other dashboards. This is an organization‑internal privilege escalation.

Patch / fix

  • bitnami grafana 11.6.9, 12.0.8, 12.1.5, 12.2.3, 12.3.1
  • Grafana grafana/grafana 11.6.9, 12.0.8, 12.1.5, 12.2.3, 12.3.1
  • Grafana grafana/grafana-enterprise 11.6.9, 12.0.8, 12.1.5, 12.2.3, 12.3.1
  • Red Hat Red Hat Enterprise Linux 10 0:10.2.6-22.el10_1
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:10.2.6-20.el10_0
  • Red Hat Red Hat Enterprise Linux 9 0:10.2.6-18.el9_7
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:10.2.6-17.el9_6
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11 1783578847
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.12 1774002166
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.13 1774950654
  • grafana RHEL 9 10.2.6-18.el9_7
  • grafana-selinux RHEL 9 10.2.6-18.el9_7
  • grafana RHEL 10.1 10.2.6-22.el10_1
  • grafana-selinux RHEL 10.1 10.2.6-22.el10_1
  • grafana RHEL 9.6 EUS 10.2.6-17.el9_6
  • grafana-selinux RHEL 9.6 EUS 10.2.6-17.el9_6
  • grafana enterprise linux eus 10.0 10.2.6-20.el10_0
  • grafana-selinux enterprise linux eus 10.0 10.2.6-20.el10_0

red hat advisories RHSA-2026:3529RHSA-2026:3078RHSA-2026:2920RHSA-2026:2914

  • grafana Multi Linux Manager Tools SLE-15 11.6.14+security01-150002.4.14.1
  • spacecmd Multi Linux Manager Tools SLE-15 5.1.13-150002.3.9.3
  • uyuni-tools Multi Linux Manager Tools SLE-Micro-5, Multi Linux Manager Tools SLE-15 5.1.26-150002.3.12.1
  • prometheus-blackbox_exporter Multi Linux Manager Tools SLE-Micro-5, Multi Linux Manager Tools SLE-15 0.26.0-150002.3.6.1
  • golang-github-prometheus-prometheus Multi Linux Manager Tools SLE-15 3.5.0-150002.3.8.1
  • golang-github-lusitaniae-apache_exporter Multi Linux Manager Tools SLE-15 1.0.10-150002.3.6.1
  • grafana SLE Module for Package Hub 15 SP7, openSUSE Leap 15.6 11.6.11-150200.3.83.1
  • grafana Manager Client Tools 15 11.6.11-150000.1.90.1

suse advisories SUSE-SU-2026:1524-1SUSE-SU-2026:1037-1SUSE-SU-2026:1013-1

  • grafana openSUSE Tumbleweed 11.6.14+security01-1.1

opensuse advisories openSUSE-SU-2026:10601-1

  • grafana AlmaLinux 10 10.2.6-22.el10_1
  • grafana-selinux AlmaLinux 10 10.2.6-22.el10_1
  • grafana AlmaLinux 9 10.2.6-18.el9_7
  • grafana-selinux AlmaLinux 9 10.2.6-18.el9_7

almalinux advisories ALSA-2026:2914ALSA-2026:2920

  • grafana Rocky Linux 10 10.2.6-22.el10_1
  • grafana Rocky Linux 9 10.2.6-18.el9_7

rocky linux advisories RLSA-2026:2914RLSA-2026:2920

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-2026-21721 updated cvss 8.1

grafana/grafana/pkg/services/dashboards: Grafana Dashboard Permissions Scope Bypass Enables Cross‑Dashboard Privilege Escalation

  • Red Hat Multicluster Global Hub multicluster-globalhub/multicluster-globalhub-grafana-rhel9 Red Hat Ceph Storage 5 rhel8/grafana, rhel9/grafana, rhceph/grafana-rhel9 Red Hat Ceph Storage 6 rhel8/grafana, rhel9/grafana, rhceph/grafana-rhel9 Red Hat Ceph Storage 8 rhel8/grafana, rhel9/grafana
    affected: workaround, no fix available
  • Red Hat Advanced Cluster Management for Kubernetes 2.11 rhacm2/acm-grafana-rhel9 1783578847
    fixed: vendor fix RHSA-2026:41064
  • Red Hat Advanced Cluster Management for Kubernetes 2.12 rhacm2 1774002166
    fixed: vendor fix RHSA-2026:5633
  • Red Hat Advanced Cluster Management for Kubernetes 2.13 rhacm2 1774950654
    fixed: vendor fix RHSA-2026:8229
  • Red Hat Ceph Storage 8.1 rhceph/grafana-rhel9 1791176238
    fixed: vendor fix RHSA-2026:79243
  • Red Hat Enterprise Linux AppStream (v. 9) grafana 10.2.6-18.el9_7, grafana-selinux 10.2.6-18.el9_7
    fixed: vendor fix RHSA-2026:2920
  • Red Hat Enterprise Linux AppStream (v. 10) grafana 10.2.6-22.el10_1, grafana-selinux 10.2.6-22.el10_1
    fixed: vendor fix RHSA-2026:2914
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) grafana 10.2.6-20.el10_0, grafana-selinux 10.2.6-20.el10_0
    fixed: vendor fix RHSA-2026:3078
show 2 more
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) grafana 10.2.6-17.el9_6, grafana-selinux 10.2.6-17.el9_6
    fixed: vendor fix RHSA-2026:3529
  • Red Hat Advanced Cluster Management for Kubernetes 2.11 rhacm2/thanos-rhel9 1784105699, rhacm2/console-rhel9 1783350952, rhacm2/prometheus-rhel9 1784022042, rhacm2/acm-search-v2-rhel9 1783327407, rhacm2/node-exporter-rhel9 1784018382, rhacm2/observatorium-rhel9 1783640394, +34 more Red Hat Advanced Cluster Management for Kubernetes 2.12 rhacm2 1772926628, rhacm2 1772926643, rhacm2 1773090422, rhacm2 1773090513, rhacm2 1773099456, rhacm2 1773099472, +36 more Red Hat Advanced Cluster Management for Kubernetes 2.13 rhacm2 1774915147, rhacm2 1774915148, rhacm2 1774915173, rhacm2 1774915248, rhacm2 1774915327, rhacm2 1774915330, +35 more Red Hat Ceph Storage 8.1 rhceph/rhceph-8-rhel9 1791176990, rhceph/keepalived-rhel9 1791175257, rhceph/oauth2-proxy-rhel9 1791176282, rhceph/snmp-notifier-rhel9 1791176336, rhceph/rhceph-haproxy-rhel9 1791176338, rhceph/rhceph-promtail-rhel9 1791176366 Red Hat Enterprise Linux 8 grafana, grafana-loki, grafana-mssql, grafana-mysql, grafana-selinux, grafana-graphite, +8 more
    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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
9 mo ago

Exploit prediction

0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CISA ADP 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
OSV 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
bitnami grafana
>=10.2.0, <11.6.9
>=12.0.0, <12.0.8
>=12.1.0, <12.1.5
>=12.2.0, <12.2.3
>=12.3.0, <12.3.1
11.6.9
12.0.8
12.1.5
12.2.3
12.3.1

Affected products

  • Grafana grafana/grafana
  • Grafana grafana/grafana-enterprise
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.12
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.13
  • Red Hat Multicluster Global Hub
  • Red Hat Red Hat Ceph Storage 5
  • Red Hat Red Hat Ceph Storage 6
  • Red Hat Red Hat Ceph Storage 8
  • Red Hat Red Hat Enterprise Linux 8

Classification

Weakness
  • CWE-863 Incorrect Authorization
  • CWE-639 Authorization Bypass Through User-Controlled Key

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.