← Back
CVE-2026-67214
medium
CVSS 5.9
Vulnerability in nanoid (CVE-2026-67214)
Summary
vulnerability in nanoid (CVE-2026-67214). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `5.1.16` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-67214** has been found in nanoid.
Risk of unauthorized operations or information disclosure. CVSS score: 5.9/10.
What to do: upgrade nanoid to **5.1.16** or later.
If unsure, ask your IT team or search "nanoid CVE-2026-67214" on the vendor's site.
CVE-2026-67214 (nanoid) — CWE-835 / CVSS v3 5.9
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `5.1.16` — 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** (CWE-835) exists in nanoid.
📍 Affected scope
nanoid — .
🔥 Severity
Severity: Medium (CVSS 5.9/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **5.1.16**.
🛡️ 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 'nanoid' .` 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 'nanoid' . | 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 `nanoid` を grep し、稼働しているサービス・バージョンを把握する。
-
6Apply patch patch
Upgrade nanoid to 5.1.16ステージング環境で 5.1.16 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。
-
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
npm
nanoid
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.16"}]}]
References
- patch [email protected]
- patch [email protected]
- web [email protected]
- web https://nvd.nist.gov/vuln/detail/CVE-2026-67214
- web https://github.com/advisories/GHSA-28wg-ghj8-5hjv
- web https://github.com/ai/nanoid/pull/600
- web https://github.com/ai/nanoid/pull/601
- web https://github.com/ai/nanoid/commit/e835c9b71eab832bc6106944bdd26ea96cf2c66d
- web [email protected]