CVE-2025-34291(langflow langflow)の深刻度・悪用状況・対象バージョン
概要
Langflow versions up to and including 1.6.9 contain a chained vulnerability that enables account takeover and remote code execution. An overly permissive CORS configuration (allow_origins='*' with allow_credentials=True) combined with a refresh token cookie configured as SameSite=None allows a malicious webpage to perform cross-origin requests that include credentials and successfully call the refresh endpoint. An attacker-controlled origin can therefore obtain fresh access_token / refresh_token pairs for a victim session. Obtained tokens permit access to authenticated endpoints — including built-in code-execution functionality — allowing the attacker to execute arbitrary code and achieve full system compromise.
CISA の要求対応: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
影響を受ける製品
| ベンダー | 製品 | 対象バージョン |
|---|---|---|
| langflow | langflow | ≤ 1.6.9 |
基本情報
- 公開日
- 2025-12-05
- 最終更新
- 2026-10-15
- NVD の状態
- Analyzed
- 弱点の種類
- CWE-346
- CVSS 4.0
- 9.4(CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
対策の進め方
- 上の表で、使っている製品とバージョンが対象か確認します。
- ベンダーの公式アドバイザリ(下の参考情報の「Vendor Advisory」「Patch」)で修正版・回避策を確認します。
- 悪用が確認されているため、パッチ適用までの間もアクセス制限・侵害の痕跡確認を検討します。
- 日本語の情報は JVN iPedia で CVE-2025-34291 を検索 できます。
参考情報
- https://github.com/langflow-ai/langflow Product
- https://www.obsidiansecurity.com/blog/cve-2025-34291-critical-account-takeover-and-rce-vulnerability-in-the-langflow-ai-agent-workflow-platform ExploitMitigationThird Party Advisory
- https://www.vulncheck.com/advisories/langflow-cors-misconfiguration-to-token-hijack-and-rce Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-34291 US Government Resource
- https://www.crowdsec.net/vulntracking-report/cve-2025-34291 Third Party Advisory
- NVD: CVE-2025-34291
- CVE.org: CVE-2025-34291
データ出典: NIST NVD、CISA KEV、FIRST EPSS。翻訳は参考情報で、正確性は原文を優先してください。