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CVE-2026-27877 medium CVSS 6.5

Information Disclosure in github.com/grafana/grafana (CVE-2026-27877)

Summary

Vulnerability in github.com/grafana/grafana (CVE-2026-27877). Confidential information can be exposed externally. Mitigation: upgrade to 11.6.14, 12.1.10, 12.2.8, 12.3.6, 12.4.2 or later.

Original description

The description as published by the source.

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.

Source: NIST National Vulnerability Database NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-27877 has been found in github.com/grafana/grafana.
Confidential information can be exposed externally. CVSS score: 6.5/10.
What to do: upgrade github.com/grafana/grafana to 11.6.14, 12.1.10, 12.2.8, 12.3.6, 12.4.2 or later.
If unsure, ask your IT team or search "github.com/grafana/grafana CVE-2026-27877" on the vendor's site.

CVE-2026-27877 (github.com/grafana/grafana) — CWE-200 / CVSS v3 6.5
Attack vector: remote (network-reachable) / no user interaction
Patched: 11.6.14, 12.1.10, 12.2.8, 12.3.6, 12.4.2 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

Information disclosure (CWE-200) exists in github.com/grafana/grafana.

📍 Affected scope

Check the vendor advisory for the affected versions of github.com/grafana/grafana.

🔥 Severity

Severity: Medium (CVSS 6.5/10). Confidential information can be exposed externally.

🔧 How to fix

Update to 11.6.14, 12.1.10, 12.2.8, 12.3.6, 12.4.2.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/grafana/grafana' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'github.com/grafana/grafana' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で github.com/grafana/grafana を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade github.com/grafana/grafana to 11.6.14, 12.1.10, 12.2.8, 12.3.6, 12.4.2

    ステージング環境で 11.6.14, 12.1.10, 12.2.8, 12.3.6, 12.4.2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

go github.com/grafana/grafana
[{"type":"SEMVER","events":[{"introduced":"0"}]}]
Bitnami grafana
[{"type":"SEMVER","events":[{"introduced":"9.3.0"},{"fixed":"11.6.14"},{"introduced":"12.0.0"},{"fixed":"12.1.10"},{"introduced":"12.2.0"},{"fixed":"12.2.8"},{"introduced":"12.3.0"},{"fixed":"12.3.6"},{"introduced":"12.4.0"},{"fixed":"12.4.2"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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