CVE-2026-42156 Flowsint: Cypher query injection in node type on node creation
Remote attackers can inject arbitrary Cypher queries via malicious node types, enabling unauthorized data access or modification in Flowsint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-42156?
CVE-2026-42156 is a high-severity code injection vulnerability in reconurge flowsint, published on 12 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-943
Which versions are affected by CVE-2026-42156?
How do I fix CVE-2026-42156?
No fix has been published for CVE-2026-42156 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-42156 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42156 exists.
Sources
Also known as GHSA-h5m2-c2c5-968p.