CVE-2026-44308 PUBLISHED

Spring Cloud AWS: Missing SNS message signature verification allows spoofing of HTTP/HTTPS endpoint notifications

Assigner: GitHub_M
Reserved: 05.05.2026 Published: 14.05.2026 Updated: 14.05.2026

Spring Cloud AWS simplifies using AWS managed services in a Spring and Spring Boot applications. From 3.0.0 to 4.0.1, pplications using Spring Cloud AWS SNS HTTP/HTTPS endpoint support (@NotificationMessageMapping, @NotificationSubscriptionMapping, @NotificationUnsubscribeConfirmationMapping) did not verify the signature of incoming SNS messages. An unauthenticated attacker who knows the endpoint URL could send crafted HTTP POST requests mimicking SNS Notification or SubscriptionConfirmation messages. This vulnerability is fixed in 4.0.2.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS Score: 6.3

Product Status

Vendor awspring
Product spring-cloud-aws
Versions
  • Version >= 3.0.0, < 4.0.2 is affected
Vendor io.awspring.cloud
Product spring-cloud-aws-sns
Versions
  • Version >= 3.0.0, < 4.0.2 is affected

References

Problem Types

  • CWE-345: Insufficient Verification of Data Authenticity CWE