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CVE-2026-55102

Vulnerability in hashi-vault-js (CVE-2026-55102)

Summary

vulnerability in hashi-vault-js (CVE-2026-55102). Risk of unauthorized operations or information disclosure. Exploitable via ``Vault.js``. Mitigation: upgrade to `0.5.2` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **CVE-2026-55102** has been found in hashi-vault-js. Attackers can target a specific entry point like ``Vault.js`` over the network to misuse the product. Risk of unauthorized operations or information disclosure. CVSS score: ?/10. What to do: upgrade hashi-vault-js to **0.5.2** or later. If unsure, ask your IT team or search "hashi-vault-js CVE-2026-55102" on the vendor's site.
CVE-2026-55102 (hashi-vault-js) — CWE-209 / Attack surface: `Vault.js` / `AxiosError` / `console.error` / `pino` Patched: `0.5.2` — apply immediately Workaround: If users cannot immediately update the library, they can mitigate this issue by capturing all exceptions thrown by `hashi-vault-js` and sanitizing or omitting the `err.config` object before passing the errors to logging utilities or crash reporters. 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-209) exists in hashi-vault-js. Attackers reach the vulnerable code path via ``Vault.js`` without authentication.
📍 Affected scope
hashi-vault-js — . Attack surface: `Vault.js` / `AxiosError` / `console.error` / `pino`.
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **0.5.2**.
🛡️ Workaround
Workaround: If users cannot immediately update the library, they can mitigate this issue by capturing all exceptions thrown by `hashi-vault-js` and sanitizing or omitting the `err.config` object before passing the errors to logging utilities or crash reporters.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'hashi-vault-js' .` 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 'hashi-vault-js' . | 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 `hashi-vault-js` を grep し、稼働しているサービス・バージョンを把握する。

  2. 5
    Apply temporary workaround mitigate
    If users cannot immediately update the library, they can mitigate this issue by capturing all exceptions thrown by `hashi-vault-js` and sanitizing or omitting the `err.config` object before passing the errors to logging utilities or crash reporters.

    パッチが適用されるまでの応急処置として、If users cannot immediately update the library, they can mitigate this issue by capturing all exceptions thrown by `hashi-vault-js` and sanitizing or omitting the `err.config` object before passing the errors to logging utilities or crash reporters. を実施。回避策の副作用 (機能低下) を確認した上で。

  3. 6
    Apply patch patch
    Upgrade hashi-vault-js to 0.5.2

    ステージング環境で 0.5.2 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。

  4. 7
    Post-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 hashi-vault-js
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.2"}]}]

References

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