TI-2026-30487 Aliases CVE-2026-42158

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

MEDIUM 45CWE-284Published 2026-05-12 · Updated 2026-05-14

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: High
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00214 11th percentileScored 2026-11-07

Fix Fixed flowsint (reconurge): 1.2.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
reconurge	flowsint	before 1.2.3	1.2.3	Patch available	CNA

flowsint Vendorreconurge Affected before 1.2.3 Fixed in 1.2.3 Patch available CNA

Remediation

Fix · CNA flowsint (reconurge) Fixed in 1.2.3

Timeline

2026-10-02 Threatist record created from CVE-2026-42158

References

Other 1

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

TI-2026-30485 Flowsint: Cypher query injection in node type on node creation CVSS 4.0HIGH 7.1
TI-2026-32317 Flowsint: Broken Access Control allows reading of sketch logs from any user CVSS 4.0MEDIUM 5.3
TI-2026-30486 Flowsint: Stored XSS on map node marker in map page CVSS 4.0MEDIUM 5.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences