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CVE-2026-10051 high CVSS 7.5

Information Disclosure in org.eclipse.jetty:jetty-server (CVE-2026-10051)

Summary

vulnerability in org.eclipse.jetty:jetty-server (CVE-2026-10051). Confidential information can be exposed externally. Exploitable via `POST /upload`. Mitigation: upgrade to `12.1.10` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **CVE-2026-10051** has been found in org.eclipse.jetty:jetty-server. Attackers can target a specific entry point like `POST /upload` over the network to misuse the product. Confidential information can be exposed externally. CVSS score: 7.5/10. What to do: upgrade org.eclipse.jetty:jetty-server to **12.1.10** or later. If unsure, ask your IT team or search "org.eclipse.jetty:jetty-server CVE-2026-10051" on the vendor's site.
CVE-2026-10051 (org.eclipse.jetty:jetty-server) — CWE-200 / CVSS v3 7.5 Attack vector: remote (network-reachable) / unauthenticated / no user interaction Attack surface: POST /upload / GET /data Patched: `12.1.10` — apply immediately Workaround: Do not rely on HTTP request trailers for security-sensitive logic, or disable persistent connections by closing the connection after each HTTP/1.1 request. 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 org.eclipse.jetty:jetty-server. Attackers reach the vulnerable code path via `POST /upload` without authentication.
📍 Affected scope
org.eclipse.jetty:jetty-server — . Attack surface: POST /upload / GET /data.
🔥 Severity
Severity: High (CVSS 7.5/10). Confidential information can be exposed externally
🔧 How to fix
Update to **12.1.10**.
🛡️ Workaround
Workaround: Do not rely on HTTP request trailers for security-sensitive logic, or disable persistent connections by closing the connection after each HTTP/1.1 request.
🔍 Detection
Search webserver/proxy logs for unusual `POST /upload` requests with malformed payloads or SQL meta-characters. Run `grep -r 'org.eclipse.jetty:jetty-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

  1. 1
    Identify exposure identify
    grep -r 'org.eclipse.jetty:jetty-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 `org.eclipse.jetty:jetty-server` を grep し、稼働しているサービス・バージョンを把握する。

  2. 3
    Hunt for indicators of compromise detect
    grep 'POST /upload' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'

    アクセスログで `POST /upload` への異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。

  3. 5
    Apply temporary workaround mitigate
    Do not rely on HTTP request trailers for security-sensitive logic, or disable persistent connections by closing the connection after each HTTP/1.1 request.

    パッチが適用されるまでの応急処置として、Do not rely on HTTP request trailers for security-sensitive logic, or disable persistent connections by closing the connection after each HTTP/1.1 request. を実施。回避策の副作用 (機能低下) を確認した上で。

  4. 6
    Apply patch patch
    Upgrade org.eclipse.jetty:jetty-server to 12.1.10

    ステージング環境で 12.1.10 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。

  5. 7
    Post-deployment verification verify
    Replay attack against POST /upload on staging to confirm patch closes the vector

    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

maven org.eclipse.jetty:jetty-server
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"12.1.10"}]}]

References

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