High severity · published May 12, 2026
CVE-2026-42156
Flowsint: Cypher query injection in node type on node creation
7.1
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
flowsint · reconurge
< 1.2.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-42156
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-42156
github.com
https://github.com/reconurge/flowsint/security/advisories/GHSA-h5m2-c2c5-968p
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