CVE-2026-44308: Spring Framework Spring Cloud AWS Missing SNS Vulnerability

MODERATE
Advisory Identifier: GHSA-r4w4-wv68-qv85
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CWE-345
Published
Advisory Summary

CVE-2026-44308 is a MODERATE spring cloud aws missing sns vulnerability (CWE-345: Insufficient Verification of Data Authenticity) affecting Spring Framework libraries in the Maven ecosystem. The issue involves spring cloud aws missing sns message signature verification allows spoofing of http/https endpoint notifications. Remediation is available by upgrading affected packages to version 4.0.2.

CVE-2026-44308 at a Glance

CVE Identifier CVE-2026-44308
GHSA Identifier GHSA-r4w4-wv68-qv85
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-345: Insufficient Verification of Data Authenticity
Affected Product Spring Framework
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-44308

To remediate this vulnerability, upgrade all affected Spring Framework dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

io.awspring.cloud:spring-cloud-aws-sns fixed: 4.0.2 
<dependency>
    <groupId>io.awspring.cloud</groupId>
    <artifactId>spring-cloud-aws-sns</artifactId>
    <version>4.0.2</version>
</dependency>
io.awspring.cloud:spring-cloud-aws-sns fixed: Latest secure release 
<dependency>
    <groupId>io.awspring.cloud</groupId>
    <artifactId>spring-cloud-aws-sns</artifactId>
    <version>Latest secure release</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=io.awspring.cloud

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-44308, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=io.awspring.cloud

Analyze the terminal output to locate any version of Spring Framework in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.0.2), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.awspring.cloud command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-345: Insufficient Verification of Data Authenticity, where the product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. In Spring Framework, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact Applications 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, causing the application to: - Process arbitrary payloads as if they were legitimate SNS notifications. - Auto-confirm subscriptions or unsubscribe from attacker-controlled topics. Affected versions: 3.0.0 through 3.4.2, 4.0.0, and 4.0.1. The 3.x line will not receive a fix; users on 3.x should apply the workaround below or upgrade to 4.0.2. ### Patches Fixed in Spring Cloud AWS 4.0.2. When using Spring Boot auto-configuration, signature verification is enabled by default. Users should upgrade to 4.0.2. ### Workarounds Manually verify 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. ### Resources - AWS SNS: Verifying the signatures of Amazon SNS messages (https://docs.aws.amazon.com/sns/latest/dg/sns-verify-signature-of-message.html) - AWS SDK for Java v2: SnsMessageManager (https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/messagemanager/sns/SnsMessageManager.html) - Fix PR: #1614

CVE-2026-44308 Affected Spring Framework Versions

2 component(s)
Fixed Versions:
4.0.2
Product / Package Ecosystem Affected Versions Fixed Version
io.awspring.cloud:spring-cloud-aws-sns
maven/io.awspring.cloud/spring-cloud-aws-sns
Maven
≥ 4.0.0
< 4.0.2
4.0.2
io.awspring.cloud:spring-cloud-aws-sns
maven/io.awspring.cloud/spring-cloud-aws-sns
Maven
≥ 3.0.0
≤ 3.4.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/awspring/spring-cloud-aws/security/advisories/GHSA-r4w4-wv68-qv85
NVD — CVE-2026-44308 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44308
Spring Framework Source Repository REPOSITORY
https://github.com/awspring/spring-cloud-aws/pull/1614
Security Fix Commit FIX COMMIT
https://github.com/awspring/spring-cloud-aws/commit/6ab2efd97891a3d0ed0126ffa1ce223c9cfa9638
Spring Framework Source Repository REPOSITORY
https://github.com/awspring/spring-cloud-aws

Frequently Asked Questions

What is CVE-2026-44308?
CVE-2026-44308 is a security vulnerability in Spring Framework involving Spring Cloud AWS missing SNS message signature verification allows spoofing of HTTP/HTTPS endpoint notifications under CWE-345: Insufficient Verification of Data Authenticity.
Which Spring Framework versions are affected?
Affected versions include releases prior to 4.0.2 across affected packages: io.awspring.cloud:spring-cloud-aws-sns.
What version fixes CVE-2026-44308?
Upgrading to 4.0.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is spring-cloud-aws-sns affected?
Yes, io.awspring.cloud:spring-cloud-aws-sns is affected in releases prior to 4.0.2, Latest secure release. Upgrade your dependency to 4.0.2, Latest secure release or later.
What CWE is associated with CVE-2026-44308?
CVE-2026-44308 is classified under CWE-345: Insufficient Verification of Data Authenticity (The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.).
How can I check Maven dependencies for CVE-2026-44308?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.awspring.cloud'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-r4w4-wv68-qv85",
  "modified" : "2026-05-14T20:49:39Z",
  "published" : "2026-05-07T00:06:52Z",
  "aliases" : [ "CVE-2026-44308" ],
  "summary" : "Spring Cloud AWS missing SNS message signature verification allows spoofing of HTTP/HTTPS endpoint notifications",
  "details" : "### Impact\n  \n  Applications using Spring Cloud AWS SNS HTTP/HTTPS endpoint support (@NotificationMessageMapping, @NotificationSubscriptionMapping, @NotificationUnsubscribeConfirmationMapping) did not verify the signature of incoming SNS messages.\n\nAn unauthenticated attacker who knows the endpoint URL could send crafted HTTP POST requests mimicking SNS Notification or SubscriptionConfirmation messages, causing the application to:\n  \n  - Process arbitrary payloads as if they were legitimate SNS notifications.\n  - Auto-confirm subscriptions or unsubscribe from attacker-controlled topics.\n  \nAffected versions: 3.0.0 through 3.4.2, 4.0.0, and 4.0.1.\n  \nThe 3.x line will not receive a fix; users on 3.x should apply the workaround below or upgrade to 4.0.2.\n  \n### Patches\n  \nFixed in Spring Cloud AWS 4.0.2. When using Spring Boot auto-configuration, signature verification is enabled by default. Users should upgrade to 4.0.2.\n  \n### Workarounds\n  \nManually verify 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.\n  \n ### Resources\n  \n  - AWS SNS: Verifying the signatures of Amazon SNS messages (https://docs.aws.amazon.com/sns/latest/dg/sns-verify-signature-of-message.html)\n  - AWS SDK for Java v2: SnsMessageManager (https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/messagemanager/sns/SnsMessageManager.html)\n  - Fix PR: #1614",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.awspring.cloud:spring-cloud-aws-sns"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "fixed" : "4.0.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.awspring.cloud:spring-cloud-aws-sns"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "last_affected" : "3.4.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/awspring/spring-cloud-aws/security/advisories/GHSA-r4w4-wv68-qv85"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-44308"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/awspring/spring-cloud-aws/pull/1614"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/awspring/spring-cloud-aws/commit/6ab2efd97891a3d0ed0126ffa1ce223c9cfa9638"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/awspring/spring-cloud-aws"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-345" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-07T00:06:52Z",
    "nvd_published_at" : "2026-05-14T15:16:47Z"
  }
}