← Back
CVE-2026-34046
high
CVSS 8.8
Vulnerability in langflow (CVE-2026-34046)
Summary
vulnerability in langflow (CVE-2026-34046). Successful exploitation can lead to full system takeover. Exploitable via ``_read_flow``.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-34046** has been found in langflow.
Attackers can target a specific entry point like ``_read_flow`` over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "langflow CVE-2026-34046" on the vendor's site.
CVE-2026-34046 (langflow) — CWE-639 / CVSS v3 8.8
Attack vector: remote (network-reachable) / no user interaction
Attack surface: `_read_flow` / `AUTO_LOGIN` / `user_id` / `False`
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-639) exists in langflow. Attackers reach the vulnerable code path via ``_read_flow`` without authentication.
📍 Affected scope
langflow — . Attack surface: `_read_flow` / `AUTO_LOGIN` / `user_id` / `False`.
🔥 Severity
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover
🔧 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 'langflow' .` 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 'langflow' . | 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 `langflow` を grep し、稼働しているサービス・バージョンを把握する。
-
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。
References
- patch [email protected]
- patch [email protected]