CVE-2026-42158 PUBLISHED

Flowsint: Broken Access Control allows modification of investigation metadata from any user

Assigner: GitHub_M
Reserved: 24.04.2026 Published: 12.05.2026 Updated: 12.05.2026

Flowsint is an open-source OSINT graph exploration tool designed for cybersecurity investigation, transparency, and verification. Prior to 1.2.3, an adversary with knowledge of an investigation ID, could update the metadata of an investigation of another user. This vulnerability is fixed in 1.2.3.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS Score: 2.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	High	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	reconurge
Product	flowsint
Versions	Version < 1.2.3 is affected

References

https://github.com/reconurge/flowsint/security/advisories/GHSA-5h6v-5hv3-3jjw

Problem Types

CWE-284: Improper Access Control CWE