CVE-2026-85179: Humansignal Label-Studio

High severity, CVSS 8.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Label Studio through 1.23.0 fails to validate webhook URLs, allowing authenticated users to dispatch requests to internal services including RFC 1918 addresses and cloud metadata endpoints. Attackers can create webhooks targeting private networks and exfiltrate annotation data by enabling payload transmission in outbound requests.

Affected products

• Humansignal Label-Studio: up to and including 1.23.0

Published 2026-09-03. Last modified 2026-09-24.