CVE-2026-21721
Dashboard Permissions Scope Bypass Enables Cross‑Dashboard Privilege Escalation
Description
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.
INFO
Published Date :
Jan. 27, 2026, 9:15 a.m.
Last Modified :
June 30, 2026, 3:17 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c |
Solution
- Verify target dashboard scope in permission checks.
- Implement granular dashboard-level permission controls.
- Restrict permission management to authorized dashboards.
Public PoC/Exploit Available at Github
CVE-2026-21721 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-21721.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-21721 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-21721
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Mirror of https://github.com/nomi-sec/PoC-in-GitHub
Эксплоит на CVE-2026-21721
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-21721 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-21721 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/o:redhat:enterprise_linux_eus:10.0'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream EUS (v. 10.0)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10.1'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 10)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus:9.6::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream EUS (v.9.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:9::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 9)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:acm:2.12::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Advanced Cluster Management for Kubernetes 2.12', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:acm:2.13::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Advanced Cluster Management for Kubernetes 2.13', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:multicluster_globalhub'], 'vendor': 'Red Hat', 'product': 'Multicluster Global Hub', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ceph_storage:5'], 'vendor': 'Red Hat', 'product': 'Red Hat Ceph Storage 5', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ceph_storage:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Ceph Storage 6', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:ceph_storage:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Ceph Storage 8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'defaultStatus': 'unaffected'}] Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Added CWE CWE-639 Added Reference https://access.redhat.com/errata/RHSA-2026:2914 Added Reference https://access.redhat.com/errata/RHSA-2026:2920 Added Reference https://access.redhat.com/errata/RHSA-2026:3078 Added Reference https://access.redhat.com/errata/RHSA-2026:3529 Added Reference https://access.redhat.com/errata/RHSA-2026:5633 Added Reference https://access.redhat.com/errata/RHSA-2026:8229 Added Reference https://access.redhat.com/security/cve/CVE-2026-21721 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2433242 Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21721.json -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Grafana', 'product': 'grafana/grafana', 'versions': [{'status': 'affected', 'version': '12.3.0', 'lessThan': '12.3.1', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'grafana/grafana', 'versions': [{'status': 'affected', 'version': '12.2.0', 'lessThan': '12.2.3', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'grafana/grafana', 'versions': [{'status': 'affected', 'version': '12.1.0', 'lessThan': '12.1.5', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'grafana/grafana', 'versions': [{'status': 'affected', 'version': '12.0.0', 'lessThan': '12.0.8', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'grafana/grafana', 'versions': [{'status': 'affected', 'version': '10.2.0', 'lessThan': '11.6.9', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'grafana/grafana-enterprise', 'versions': [{'status': 'affected', 'version': '10.2.0', 'lessThan': '11.6.9', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'grafana/grafana-enterprise', 'versions': [{'status': 'affected', 'version': '12.0.0', 'lessThan': '12.0.8', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'grafana/grafana-enterprise', 'versions': [{'status': 'affected', 'version': '12.1.0', 'lessThan': '12.1.5', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'grafana/grafana-enterprise', 'versions': [{'status': 'affected', 'version': '12.2.0', 'lessThan': '12.2.3', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'grafana/grafana-enterprise', 'versions': [{'status': 'affected', 'version': '12.3.0', 'lessThan': '12.3.1', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-21721', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-01-28T04:55:19.556498Z'} -
Initial Analysis by [email protected]
Apr. 20, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:grafana:grafana:11.6.9:-:*:*:*:*:*:* *cpe:2.3:a:grafana:grafana:12.0.8:-:*:*:*:*:*:* *cpe:2.3:a:grafana:grafana:12.1.5:-:*:*:*:*:*:* *cpe:2.3:a:grafana:grafana:12.2.3:-:*:*:*:*:*:* *cpe:2.3:a:grafana:grafana:12.3.0:*:*:*:*:*:*:* *cpe:2.3:a:grafana:grafana:12.3.1:-:*:*:*:*:*:* *cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* versions from (including) 10.2.0 up to (excluding) 11.6.9 *cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* versions from (including) 12.0.0 up to (excluding) 12.0.8 *cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* versions from (including) 12.1.0 up to (excluding) 12.1.5 *cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* versions from (including) 12.2.0 up to (excluding) 12.2.3 Added Reference Type Grafana Labs: https://grafana.com/security/security-advisories/cve-2026-21721 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 26, 2026
Action Type Old Value New Value Added CWE CWE-863 -
New CVE Received by [email protected]
Jan. 27, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Added Reference https://grafana.com/security/security-advisories/CVE-2026-21721