Vulnerability · Published May 14, 2026 · Assigned by GitHub_M
CVE-2026-44308Spring Cloud AWS: Missing SNS message signature verification allows spoofing of HTTP/HTTPS endpoint notifications
Medium 6.3
In plain English
A medium-severity insufficient verification of data authenticity in spring-cloud-aws from awspring. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | io.awspring.cloud:spring-cloud-aws-sns | 4.0.2 | GHSA-r4w4-wv68-qv85 |
| Maven | io.awspring.cloud:spring-cloud-aws-sns | no fix listed | GHSA-r4w4-wv68-qv85 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| awspring | spring-cloud-aws | >= 3.0.0, < 4.0.2 |
| io.awspring.cloud | spring-cloud-aws-sns | >= 3.0.0, < 4.0.2 |
Weakness: CWE-345 · 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