What’s Vulnerable › Vulnerabilities

CVE-2026-42157: Flowsint: Stored XSS on map node marker in map page

• Severity: medium (CVSS 5.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-12 · updated 2026-10-26
• Weakness: CWE-79

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 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.

Affected products

• reconurge flowsint: before 1.2.3

References

• https://github.com/reconurge/flowsint/security/advisories/GHSA-gj93-2vcq-729w
• https://github.com/reconurge/flowsint/security/advisories/GHSA-gj93-2vcq-729w

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