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CVE-2026-43929
high
CVSS 8.2
Vulnerability in ssrfcheck (CVE-2026-43929)
Summary
vulnerability in ssrfcheck (CVE-2026-43929). Confidential information can be exposed externally. Exploitable via ``ssrfcheck``.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-43929** has been found in ssrfcheck.
Attackers can target a specific entry point like ``ssrfcheck`` over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 8.2/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "ssrfcheck CVE-2026-43929" on the vendor's site.
CVE-2026-43929 (ssrfcheck) — CWE-184 / CVSS v3 8.2
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: `ssrfcheck` / `url.hostname` / `net.BlockList`
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-184) exists in ssrfcheck. Attackers reach the vulnerable code path via ``ssrfcheck`` without authentication.
📍 Affected scope
ssrfcheck — . Attack surface: `ssrfcheck` / `url.hostname` / `net.BlockList`.
🔥 Severity
Severity: High (CVSS 8.2/10). Confidential information can be exposed externally
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ 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 'ssrfcheck' .` 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 'ssrfcheck' . | 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 `ssrfcheck` 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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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
ssrfcheck
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]