Missing Authentication for Critical Function Affecting io.awspring.cloud:spring-cloud-aws-sns package, versions [,4.0.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-IOAWSPRINGCLOUD-16799818
- published22 May 2026
- disclosed7 May 2026
- creditUnknown
Introduced: 7 May 2026
CVE-2026-44308 (opens in a new tab)How to fix?
Upgrade io.awspring.cloud:spring-cloud-aws-sns to version 4.0.2 or higher.
Overview
Affected versions of this package are vulnerable to Missing Authentication for Critical Function in the SNS HTTP/HTTPS notification endpoints due to missing signature verification. An attacker can cause the application to process arbitrary payloads as legitimate notifications, auto-confirm subscriptions, or unsubscribe from attacker-controlled topics by sending crafted HTTP POST requests to the endpoint.
Workaround
This vulnerability can be mitigated by manually verifying the SNS message signature in a servlet filter or Spring HandlerInterceptor before the request reaches the controller, using SnsMessageManager from the AWS SDK v2 sns-message-manager module.