CVE-2026-40999: Broadcom Spring Web Services

High severity, CVSS 8.6. EPSS: 0.4% chance of exploitation in the next 30 days.

When WS-Addressing is used with non-anonymous ReplyTo or FaultTo addresses, Spring WS may initiate outbound connections through configured WebServiceMessageSender instances to destinations taken directly from request headers without verifying that those destinations are safe to connect to. Affected versions: Spring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8.

Affected products

• Broadcom Spring Web Services: before 3.1.9 (fixed in 3.1.9); from 4.0.0, before 4.0.19 (fixed in 4.0.19); from 4.1.0, before 4.1.3.1 (fixed in 4.1.3.1); from 5.0.0, before 5.0.1.1 (fixed in 5.0.1.1)

Published 2026-06-11. Last modified 2026-09-04.