← Back
CVE-2026-54552
high
CVSS 7.9
Vulnerability in sh (CVE-2026-54552)
Summary
vulnerability in sh (CVE-2026-54552). Confidential information can be exposed externally. Exploitable via ``_uid``. Mitigation: upgrade to `2.2.4` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-54552** has been found in sh.
Attackers can target a specific entry point like ``_uid`` over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 7.9/10.
What to do: upgrade sh to **2.2.4** or later.
If unsure, ask your IT team or search "sh CVE-2026-54552" on the vendor's site.
CVE-2026-54552 (sh) — CWE-273 / CVSS v3 7.9
Attack vector: local / no user interaction
Attack surface: `_uid`
Patched: `2.2.4` — apply immediately
Workaround: Avoid using `_uid` when the user represents a less-privileged user.
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-273) exists in sh. Attackers reach the vulnerable code path via ``_uid`` without authentication.
📍 Affected scope
sh — . Attack surface: `_uid`.
🔥 Severity
Severity: High (CVSS 7.9/10). Confidential information can be exposed externally
🔧 How to fix
Update to **2.2.4**.
🛡️ Workaround
Workaround: Avoid using `_uid` when the user represents a less-privileged user.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'sh' .` 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 'sh' . | 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 `sh` を grep し、稼働しているサービス・バージョンを把握する。
-
5Apply temporary workaround mitigate
Avoid using `_uid` when the user represents a less-privileged user.パッチが適用されるまでの応急処置として、Avoid using `_uid` when the user represents a less-privileged user. を実施。回避策の副作用 (機能低下) を確認した上で。
-
6Apply patch patch
Upgrade sh to 2.2.4ステージング環境で 2.2.4 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
pip
sh
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.4"}]}]