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CVE-2026-49257
critical
CVSS 10.0
Vulnerability in mcp-pinot-server (CVE-2026-49257)
Summary
vulnerability in mcp-pinot-server (CVE-2026-49257). Successful exploitation can lead to full system takeover. Exploitable via `Authorization header`. Mitigation: upgrade to `3.1.0` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-49257** has been found in mcp-pinot-server.
Attackers can target a specific entry point like `Authorization header` over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 10.0/10.
What to do: upgrade mcp-pinot-server to **3.1.0** or later.
If unsure, ask your IT team or search "mcp-pinot-server CVE-2026-49257" on the vendor's site.
CVE-2026-49257 (mcp-pinot-server) — CWE-306 / CVSS v3 10.0
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: Authorization header / `main` / `oauth_enabled` / `_auth`
Patched: `3.1.0` — apply immediately
Workaround: set OAUTH_: ENABLED
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
**A vulnerability** (CWE-306) exists in mcp-pinot-server. Attackers reach the vulnerable code path via `Authorization header` without authentication.
📍 Affected scope
mcp-pinot-server — . Attack surface: Authorization header / `main` / `oauth_enabled` / `_auth`.
🔥 Severity
Severity: Critical (CVSS 10.0/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to **3.1.0**.
🛡️ Workaround
Workaround: set OAUTH_: ENABLED
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'mcp-pinot-server' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'mcp-pinot-server' . | 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 `mcp-pinot-server` を grep し、稼働しているサービス・バージョンを把握する。
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5Apply temporary workaround mitigate
set OAUTH_: ENABLEDパッチが適用されるまでの応急処置として、set OAUTH_: ENABLED を実施。回避策の副作用 (機能低下) を確認した上で。
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6Apply patch patch
Upgrade mcp-pinot-server to 3.1.0ステージング環境で 3.1.0 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と、Step 3 で見つけた異常検知の続報チェックを含めること。
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7Post-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 Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
pip
mcp-pinot-server
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.0"}]}]
References
- web https://github.com/startreedata/mcp-pinot/commit/1c7d3f9cd384854bf72c127d230bdb32299475ad
- web https://github.com/startreedata/mcp-pinot/issues/90
- web https://github.com/startreedata/mcp-pinot/pull/95
- web https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6
- web https://nvd.nist.gov/vuln/detail/CVE-2026-49257
- web https://github.com/advisories/GHSA-73cv-556c-w3g6