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CVE-2026-53486
Path Traversal in @xhmikosr/decompress (CVE-2026-53486)
Summary
path traversal in @xhmikosr/decompress (CVE-2026-53486). Risk of unauthorized operations or information disclosure. Exploitable via ``path.relative``. Mitigation: upgrade to `11.1.3` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-53486** has been found in @xhmikosr/decompress.
Attackers can target a specific entry point like ``path.relative`` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade @xhmikosr/decompress to **11.1.3** or later.
If unsure, ask your IT team or search "@xhmikosr/decompress CVE-2026-53486" on the vendor's site.
CVE-2026-53486 (@xhmikosr/decompress) — CWE-22 /
Attack surface: `path.relative` / `decompress`
Patched: `11.1.3` — apply immediately
Workaround: Extract only archives you trust.
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
**Path traversal** (CWE-22) exists in @xhmikosr/decompress. Attackers reach the vulnerable code path via ``path.relative`` without authentication.
📍 Affected scope
@xhmikosr/decompress — . Attack surface: `path.relative` / `decompress`.
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **11.1.3**.
🛡️ Workaround
Workaround: Extract only archives you trust.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r '@xhmikosr/decompress' .` 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 '@xhmikosr/decompress' . | 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 `@xhmikosr/decompress` 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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5Apply temporary workaround mitigate
Extract only archives you trust.パッチが適用されるまでの応急処置として、Extract only archives you trust. を実施。回避策の副作用 (機能低下) を確認した上で。
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6Apply patch patch
Upgrade @xhmikosr/decompress to 11.1.3ステージング環境で 11.1.3 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
npm
@xhmikosr/decompress
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.1.3"}]}]
npm
decompress
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
References
- web https://github.com/XhmikosR/decompress/security/advisories/GHSA-mp2f-45pm-3cg9
- web https://github.com/XhmikosR/decompress/commit/281cefa
- web https://github.com/XhmikosR/decompress/commit/60b5299
- web https://github.com/XhmikosR/decompress/commit/aca5aac
- web https://github.com/advisories/GHSA-mp2f-45pm-3cg9