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OpenAdvisories
Medium · 6.3 CVE-2026-44308 EUVD-2026-30302GHSA-r4w4-wv68-qv85

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

Published May 14, 2026 · Updated May 14, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
awspring spring-cloud-aws >= 3.0.0, < 4.0.2 —
io.awspring.cloud spring-cloud-aws-sns >= 3.0.0, < 4.0.2 —

Affected packages

EcosystemPackageAffectedFixedRecord
Maven io.awspring.cloud:spring-cloud-aws-sns >= 4.0.0, < 4.0.2 4.0.2 GHSA-r4w4-wv68-qv85
Maven io.awspring.cloud:spring-cloud-aws-sns >= 3.0.0, <= 3.4.2 — GHSA-r4w4-wv68-qv85

References