Unauthenticated Remote UDP Injection via Spring Integration UDP Inbound Adapter 5.5.21-7.1.0
CVE-2026-47861 Published on August 26, 2026
UDP adapter sends ack to attacker-supplied host:port parsed from packet body, even when acknowledge=false
An unauthenticated remote attacker who can send a single UDP packet to a Spring Integration UDP inbound adapter can cause the server to emit an outbound UDP datagram to an arbitrary internal or external host and port of the attacker's choosing.
Spring Integration 7.1.0
Spring Integration 7.0.0 - 7.0.5
Spring Integration 6.5.0 - 6.5.10
Spring Integration 6.4.0 - 6.4.12
Spring Integration 5.5.21 and earlier
Vulnerability Analysis
CVE-2026-47861 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.
Products Associated with CVE-2026-47861
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Affected Versions
Spring Integration:- Version 7.1.0 is affected.
- Version 7.0.0, <= 7.0.5 is affected.
- Version 6.5.0, <= 6.5.10 is affected.
- Version 6.4.0, <= 6.4.12 is affected.
- Before and including 5.5.21 is affected.