CVE-2026-21721: Dashboard Permissions Scope Bypass Enables Cross‑Dashboard Privilege Escalation
Vulnerability summary
CVE-2026-21721 is a high (CVSS 8.1) Incorrect Authorization vulnerability in grafana. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 54.1% of scored vulnerabilities.
Not severe (CVSS 8.1, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 5Timeline
- 27-01-2026PublishedVulnerability first disclosed.
- 27-08-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · Red hatEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- OSV · UbuntuEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- OSV · ChainguardEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- NVDNIST8.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS trend
Probability
0.72%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
Decrease -0.01 pp
From 0.73% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-863Incorrect AuthorizationThe product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
- CWE-639Authorization Bypass Through User-Controlled KeyThe system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
Affected systems
Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat4 products
- grafana< 0:10.2.6-17.el9_6 | < 0:10.2.6-20.el10_0
- grafana-debuginfo< 0:10.2.6-17.el9_6 | < 0:10.2.6-20.el10_0
- grafana-debugsource< 0:10.2.6-17.el9_6 | < 0:10.2.6-20.el10_0
- grafana-selinux< 0:10.2.6-17.el9_6 | < 0:10.2.6-20.el10_0
Chainguard3 products
- grafana-11.4All versions (No fix recorded) | < 11.4.8-r3
- grafana-11.5< 11.5.10-r2
- grafana-fips-11.5All versions (No fix recorded)
Grafana3 products
- grafanaEOL≥ 10.2.0, < 11.6.9 | ≥ 12.0.0, < 12.0.8 | ≥ 12.1.0, < 12.1.5 | ≥ 12.2.0, < 12.2.3 | 11.6.9 | 12.0.8 | 12.1.5 | 12.2.3 | 12.3.0 | 12.3.1
- grafana/grafana≥ 12.3.0, < 12.3.1 | ≥ 12.2.0, < 12.2.3 | ≥ 12.1.0, < 12.1.5 | ≥ 12.0.0, < 12.0.8 | ≥ 10.2.0, < 11.6.9
- grafana/grafana-enterprise≥ 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
Ubuntu1 product
- grafanaAll versions (No fix recorded)
4 vendors · 11 products
