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CVE-2026-54281
Authorization Flaw in @nestjs/platform-fastify (CVE-2026-54281)
Summary
vulnerability in @nestjs/platform-fastify (CVE-2026-54281). Risk of unauthorized operations or information disclosure. Exploitable via `GET /resource`. Mitigation: upgrade to `11.1.24` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-54281** has been found in @nestjs/platform-fastify.
Attackers can target a specific entry point like `GET /resource` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade @nestjs/platform-fastify to **11.1.24** or later.
If unsure, ask your IT team or search "@nestjs/platform-fastify CVE-2026-54281" on the vendor's site.
CVE-2026-54281 (@nestjs/platform-fastify) — CWE-863 /
Attack surface: GET /resource / GET /resource/
Patched: `11.1.24` — 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
**incorrect authorization** (CWE-863) exists in @nestjs/platform-fastify. Attackers reach the vulnerable code path via `GET /resource` without authentication.
📍 Affected scope
@nestjs/platform-fastify — . Attack surface: GET /resource / GET /resource/.
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **11.1.24**.
🛡️ 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 `GET /resource` requests with malformed payloads or SQL meta-characters. Run `grep -r '@nestjs/platform-fastify' .` 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
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1Identify exposure identify
grep -r '@nestjs/platform-fastify' . | 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 `@nestjs/platform-fastify` 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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3Hunt for indicators of compromise detect
grep 'GET /resource' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで `GET /resource` 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。
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6Apply patch patch
Upgrade @nestjs/platform-fastify to 11.1.24ステージング環境で 11.1.24 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
Replay attack against GET /resource 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
npm
@nestjs/platform-fastify
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.1.24"}]}]