CVE-2026-27877 — grafana
MEDIUMCVE-2026-27877 is a medium-severity (CVSS 6.5) CWE-312 vulnerability in github.com/grafana/grafana. A fix is available for github.com/grafana/grafana — see the affected versions and patch details below.
Public dashboards discloses all direct mode datasources
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-27877.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2026-27877 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,156 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
github.com/grafana/grafana🐹github.com/grafana/grafana🐹github.com/grafana/grafana🐹github.com/grafana/grafana🐹github.com/grafana/grafana🐹github.com/grafana/grafanaReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
When using public dashboards and direct data-sources, all direct data-sources' passwords are exposed despite not being used in dashboards.
No passwords of proxied data-sources are exposed. We encourage all direct data-sources to be converted to proxied data-sources as far as possible to improve your deployments' security.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/grafana/grafana | ≥ 9.3.0 | No fix |
| 🐹Go | github.com/grafana/grafana | ≥ 12.0.0 | No fix |
| 🐹Go | github.com/grafana/grafana | ≥ 12.2.0 | No fix |
| 🐹Go | github.com/grafana/grafana | ≥ 12.3.0 | No fix |
| 🐹Go | github.com/grafana/grafana | ≥ 12.4.0 | No fix |
| 🐹Go | github.com/grafana/grafana | ≥ 1.9.2-0.20221116104934-4ee83a5f2bf4&&< 1.9.2-0.20260325055210-3522153e07b4 | 1.9.2-0.20260325055210-3522153e07b4go get github.com/grafana/grafana@v1.9.2-0.20260325055210-3522153e07b4 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/grafana/grafana, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
No patched version of github.com/grafana/grafana has shipped for CVE-2026-27877 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-27877 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2026-27877. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Enterprise Linux 10 | grafana-0:10.2.6-24.el10_1 | RHSA-2026:10223 |
| Red Hat Enterprise Linux 10 | grafana-0:10.2.6-26.el10_2 | RHSA-2026:19134 |
| Red Hat Enterprise Linux 10.0 Extended Update Support | grafana-0:10.2.6-23.el10_0 | RHSA-2026:11417 |
| Red Hat Enterprise Linux 9 | grafana-0:10.2.6-20.el9_7 | RHSA-2026:10226 |
| Red Hat Enterprise Linux 9 | grafana-0:10.2.6-22.el9_8 | RHSA-2026:19352 |
| Red Hat Enterprise Linux 9.6 Extended Update Support | grafana-0:10.2.6-20.el9_6 | RHSA-2026:11416 |
Frequently Asked Questions
Is CVE-2026-27877 in your dependencies?
O3 Security finds CVE-2026-27877 across Go dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.