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CVE-2026-55423— Langflow: Logout button does not clear session

Quick assessment

Affected
langflow-ai langflow
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Langflow是Langflow团队开源的一个用于构建多代理和 RAG 应用程序的可视化框架。 Langflow 1.7.0之前版本存在会话机制问题漏洞，该漏洞源于注销按钮未清除会话，可能导致之前用户保持登录状态。

CVSS 6.1 · Medium EPSS 0.22% · P11

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
langflow-ai langflow < 1.7.0 affected
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I. Basic Information for CVE-2026-55423

Vulnerability Information
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Vulnerability Title
Langflow: Logout button does not clear session
Source: CVE Program / CVE List V5
Vulnerability Description
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.7.0, the logout button does not clear the session. The previous user stays logged in unless another user explicitly logs in. This vulnerability is fixed in 1.7.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5
Vulnerability Title
Langflow 会话机制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Langflow是Langflow团队开源的一个用于构建多代理和 RAG 应用程序的可视化框架。 Langflow 1.7.0之前版本存在会话机制问题漏洞，该漏洞源于注销按钮未清除会话，可能导致之前用户保持登录状态。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
langflow-ai langflow < 1.7.0 -

II. Public POCs for CVE-2026-55423

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III. Intelligence Information for CVE-2026-55423

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Patches & Fixes for CVE-2026-55423 (2)

Vendor Advisories for CVE-2026-55423 (1)

Same Patch Batch · langflow-ai · 2026-06-23 · 9 CVEs total

CVE-2026-48519 9.6 CRITICAL Langflow: Unauthenticated RCE in Shareable Playgrounds
CVE-2026-55447 9.6 CRITICAL Langflow: BaseFileComponent-based nodes arbitrary file read with RCE exploit
CVE-2026-55450 9.3 CRITICAL Langflow: Unauthenticated file upload leads to DoS (space exhaustion) and information leak
CVE-2026-33760 8.8 HIGH Langflow: IDOR/BOLA in Monitor API — Missing Ownership Enforcement on 7 Endpoints
CVE-2026-55255 8.4 HIGH Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attacker
CVE-2026-55446 7.5 HIGH Langflow: Unauthenticated DoS through multipart form boundary file upload
CVE-2026-42867 6.5 MEDIUM Langflow: Path Traversal in Knowledge Bases API via Creation Endpoint
CVE-2026-48520 6.1 MEDIUM Langflow: Unauthenticated Shareable Playground arbitrary local or S3 file read

IV. Related Vulnerabilities

Same product: langflow
Same vendor: langflow-ai
Same weakness: CWE-613

V. Comments for CVE-2026-55423

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