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CVE-2026-42260
high
CVSS 8.2
SSRF (Server-Side Request Forgery) in open-websearch (CVE-2026-42260)
Summary
SSRF in open-websearch (CVE-2026-42260). Confidential information can be exposed externally. Exploitable via `GET /internal`. Mitigation: upgrade to `2.1.7` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-42260** has been found in open-websearch.
Attackers can target a specific entry point like `GET /internal` over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 8.2/10.
What to do: upgrade open-websearch to **2.1.7** or later.
If unsure, ask your IT team or search "open-websearch CVE-2026-42260" on the vendor's site.
CVE-2026-42260 (open-websearch) — CWE-918 / CVSS v3 8.2
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: GET /internal / `isPublicHttpUrl` / `assertPublicHttpUrl` / `fetchWebContent`
Patched: `2.1.7` — 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
**SSRF** (CWE-918) exists in open-websearch. Attackers reach the vulnerable code path via `GET /internal` without authentication.
📍 Affected scope
open-websearch — . Attack surface: GET /internal / `isPublicHttpUrl` / `assertPublicHttpUrl` / `fetchWebContent`.
🔥 Severity
Severity: High (CVSS 8.2/10). Confidential information can be exposed externally
🔧 How to fix
Update to **2.1.7**.
🛡️ 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 `GET /internal` requests with malformed payloads or SQL meta-characters. Run `grep -r 'open-websearch' .` 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 'open-websearch' . | 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 `open-websearch` 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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3Hunt for indicators of compromise detect
grep 'GET /internal' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで `GET /internal` への異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。
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6Apply patch patch
Upgrade open-websearch to 2.1.7ステージング環境で 2.1.7 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
Replay attack against GET /internal on staging to confirm patch closes the vector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
open-websearch
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.1.7"}]}]