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CVE-2026-7787— Unauthenticated Session History Access via Public Flow Execution

Quick assessment

Affected
IBM Langflow OSS
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.

IBM Langflow是美国国际商业机器（IBM）公司的一个可视化流程编排工具。 IBM Langflow OSS 1.0.0版本至1.9.1版本存在安全漏洞，该漏洞源于不安全的直接对象引用，可能导致经过身份验证的用户绕过身份验证读取或修改敏感信息。

CVSS 7.5 · High EPSS 0.25% · P16

Possible ATT&CK Techniques 1 AI

T1550 · Use Alternate Authentication Material

Affected Version Matrix 1

VendorProduct Version RangeStatus
IBM Langflow OSS 1.0.0≤ 1.9.1 affected
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I. Basic Information for CVE-2026-7787

Vulnerability Information
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Vulnerability Title
Unauthenticated Session History Access via Public Flow Execution
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Langflow OSS 1.0.0 through 1.9.1 could allow an authenticated user to read or modify sensitive information by bypassing authentication using insecure direct object references.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
IBM Langflow 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IBM Langflow是美国国际商业机器（IBM）公司的一个可视化流程编排工具。 IBM Langflow OSS 1.0.0版本至1.9.1版本存在安全漏洞，该漏洞源于不安全的直接对象引用，可能导致经过身份验证的用户绕过身份验证读取或修改敏感信息。
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
IBM Langflow OSS 1.0.0 ~ 1.9.1 cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-7787

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III. Intelligence Information for CVE-2026-7787

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Vendor Advisories for CVE-2026-7787 (1)

Same Patch Batch · IBM · 2026-06-11 · 5 CVEs total

CVE-2026-7870 8.8 HIGH IBM i is Affected by Privilege Escalation []
CVE-2026-4096 6.5 MEDIUM A vulnerability has been identified in IBM DevOps Plan that allows a Host Header Injection
CVE-2026-3341 5.4 MEDIUM IBM Langflow Desktop 1.0.0 - 1.9.2 DNS Rebinding Bypasses SSRF Protection Allowing Access
CVE-2024-45636 4.1 MEDIUM IBM Security QRadar EDR Software has a vulnerability where user credentials may be stored

IV. Related Vulnerabilities

Same product: Langflow OSS
Same vendor: IBM
Same weakness: CWE-639

V. Comments for CVE-2026-7787

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