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CVE-2026-46341
medium
CVSS 6.1
Vulnerability in @apify/actors-mcp-server (CVE-2026-46341)
Summary
vulnerability in @apify/actors-mcp-server (CVE-2026-46341). Risk of unauthorized operations or information disclosure. Exploitable via ``startsWith``. Mitigation: upgrade to `0.9.21` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-46341** has been found in @apify/actors-mcp-server.
Attackers can target a specific entry point like ``startsWith`` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 6.1/10.
What to do: upgrade @apify/actors-mcp-server to **0.9.21** or later.
If unsure, ask your IT team or search "@apify/actors-mcp-server CVE-2026-46341" on the vendor's site.
CVE-2026-46341 (@apify/actors-mcp-server) — CWE-20 / CVSS v3 6.1
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: `startsWith` / `docs.apify.com.evil.com` / `_meta.apifyToken`
Patched: `0.9.21` — 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-20) exists in @apify/actors-mcp-server. Attackers reach the vulnerable code path via ``startsWith`` without authentication.
📍 Affected scope
@apify/actors-mcp-server — . Attack surface: `startsWith` / `docs.apify.com.evil.com` / `_meta.apifyToken`.
🔥 Severity
Severity: Medium (CVSS 6.1/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **0.9.21**.
🛡️ 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 '@apify/actors-mcp-server' .` 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 '@apify/actors-mcp-server' . | 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 `@apify/actors-mcp-server` 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 @apify/actors-mcp-server to 0.9.21ステージング環境で 0.9.21 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
@apify/actors-mcp-server
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.9.21"}]}]