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THREAT OPS › Threat News › [NVD] CVE-2026-40999 (HIGH 8.6) — 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 c

[NVD] CVE-2026-40999 (HIGH 8.6) — 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 c

lownvdPublished 2026-06-11

CVE-2026-40999 CVSS: 8.6 HIGH Published: 2026-06-11T07:16:27.907

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

MITRE ATT&CK techniques

Web ServicesT1583.006
Web ServicesT1584.006

Indicators of compromise

CVE-2026-40999cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-40999