Spring WS SSRF via unvalidated WS-Addressing reply destinations
CVE-2026-40999

8.6HIGH

Key Information:

Vendor

Spring

Status
Spring Web Services
Vendor
CVE Published:
11 June 2026

What is CVE-2026-40999?

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 Version(s)

Spring Web Services 5.0.0 < 5.0.2

Spring Web Services 4.1.0 < 4.1.4

Spring Web Services 4.0.0 < 4.0.19

References

https://spring.io/security/cve-2026-40999

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.