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DEBIAN-CVE-2026-21710
Vulnerability in nodejs (DEBIAN-CVE-2026-21710)
Summary
vulnerability in nodejs (DEBIAN-CVE-2026-21710). Risk of unauthorized operations or information disclosure. Exploitable via ``TypeError``. Mitigation: upgrade to `18.20.4+dfsg-1~deb12u2` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **DEBIAN-CVE-2026-21710** has been found in nodejs.
Attackers can target a specific entry point like ``TypeError`` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade nodejs to **18.20.4+dfsg-1~deb12u2** or later.
If unsure, ask your IT team or search "nodejs DEBIAN-CVE-2026-21710" on the vendor's site.
DEBIAN-CVE-2026-21710 (nodejs) —
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: `TypeError` / `__proto__` / `req.headersDistinct` / `Object.prototype`
Patched: `18.20.4+dfsg-1~deb12u2` — 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
**A vulnerability** (unclassified) exists in nodejs. Attackers reach the vulnerable code path via ``TypeError`` without authentication.
📍 Affected scope
nodejs — . Attack surface: `TypeError` / `__proto__` / `req.headersDistinct` / `Object.prototype`.
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **18.20.4+dfsg-1~deb12u2**.
🛡️ 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 'nodejs' .` 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 'nodejs' . | 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 `nodejs` 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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6Apply patch patch
Upgrade nodejs to 18.20.4+dfsg-1~deb12u2ステージング環境で 18.20.4+dfsg-1~deb12u2 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
Debian:11
nodejs
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:12
nodejs
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"18.20.4+dfsg-1~deb12u2"}]}]
Debian:13
nodejs
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.19.2+dfsg-1+deb13u2"}]}]
Debian:14
nodejs
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"22.22.2+dfsg+~cs22.19.15-1"}]}]