XSS in Reconurge Flowsint

CVE-2026-42157

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 map node with a malicious label that contains arbitrary HTML. When the map tab is selected and a map node marker is selected, it will render the arbitrary HTML, potentially triggering stored XSS. This vulnerability is fixed in 1.2.3.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (20.1th percentile) — read the EPSS interpretation.