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CVE-2026-42156— Flowsint: Cypher query injection in node type on node creation

Quick assessment

Affected
reconurge flowsint
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.

Flowsint是reconurge开源的一个开源情报图形化调查工具。 Flowsint 1.2.3之前版本存在安全漏洞，该漏洞源于恶意节点类型可逃逸现有Cypher查询，可能导致远程攻击者执行任意Cypher查询。

AI Predicted 9.8 Difficulty: Easy EPSS 0.48% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
reconurge flowsint < 1.2.3 affected
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I. Basic Information for CVE-2026-42156

Vulnerability Information
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Vulnerability Title
Flowsint: Cypher query injection in node type on node creation
Source: CVE Program / CVE List V5
Vulnerability Description
Flowsint is an open-source OSINT graph exploration tool designed for cybersecurity investigation, transparency, and verification. Prior to 1.2.3, a remote attacker can create a node with a malicious type that can escape an existing Cypher query and an adversary can execute an arbitrary Cypher query. This vulnerability is fixed in 1.2.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
数据查询逻辑中特殊元素的不当中和
Source: CVE Program / CVE List V5
Vulnerability Title
Flowsint 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flowsint是reconurge开源的一个开源情报图形化调查工具。 Flowsint 1.2.3之前版本存在安全漏洞，该漏洞源于恶意节点类型可逃逸现有Cypher查询，可能导致远程攻击者执行任意Cypher查询。
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
reconurge flowsint < 1.2.3 -

II. Public POCs for CVE-2026-42156

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III. Intelligence Information for CVE-2026-42156

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Vendor Advisories for CVE-2026-42156 (1)

Same Patch Batch · reconurge · 2026-05-12 · 4 CVEs total

CVE-2026-42157 Flowsint: Stored XSS on map node marker in map page
CVE-2026-42158 Flowsint: Broken Access Control allows modification of investigation metadata from any use
CVE-2026-44352 Flowsint: Broken Access Control allows reading of sketch logs from any user

IV. Related Vulnerabilities

Same product: flowsint
Same vendor: reconurge
Same weakness: CWE-943

V. Comments for CVE-2026-42156

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