CVE-2026-40999: Spring Web Services SSRF Vulnerability
HIGHCVE-2026-40999 is a HIGH (CVSS 8.6) ssrf vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Spring Web Services libraries in the Maven ecosystem. The issue involves ssrf via unvalidated ws-addressing reply destinations. Remediation is available by upgrading affected packages to version 5.0.2, 4.1.4.
CVE-2026-40999 at a Glance
Security Impact
CVSS: 8.6
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N).
How to Fix CVE-2026-40999
To remediate this vulnerability, upgrade all affected Spring Web Services dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-core</artifactId>
<version>5.0.2</version>
</dependency><dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-core</artifactId>
<version>4.1.4</version>
</dependency><dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-core</artifactId>
<version>Latest secure release</version>
</dependency><dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-core</artifactId>
<version>Latest secure release</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.springframework.wsHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-40999, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.springframework.wsAnalyze the terminal output to locate any version of Spring Web Services in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.0.2), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.springframework.ws 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-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Spring Web Services, 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
CVE-2026-40999 Affected Spring Web Services Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.springframework.ws:spring-ws-core
|
Maven |
≥ 5.0.0
< 5.0.2
|
5.0.2
|
|
org.springframework.ws:spring-ws-core
|
Maven |
≥ 4.1.0
< 4.1.4
|
4.1.4
|
|
org.springframework.ws:spring-ws-core
|
Maven |
≥ 4.0.0
≤ 4.0.18
|
|
|
org.springframework.ws:spring-ws-core
|
Maven |
≥ 3.1.0
≤ 3.1.8
|
|
References
Frequently Asked Questions
What is CVE-2026-40999?
Which Spring Web Services versions are affected?
What version fixes CVE-2026-40999?
Is spring-ws-core affected?
What is the CVSS score of CVE-2026-40999?
What CWE is associated with CVE-2026-40999?
How can I check Maven dependencies for CVE-2026-40999?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-whpp-xv3h-rwxf",
"modified" : "2026-08-21T19:13:14Z",
"published" : "2026-06-11T09:31:56Z",
"aliases" : [ "CVE-2026-40999" ],
"summary" : "Spring Web Services: SSRF via unvalidated WS-Addressing reply destinations",
"details" : "When WS-Addressing is used with non-anonymous ReplyTo or FaultTo addresses, Spring WS may initiate outbound connections through configured WebServiceMessageSender instances to destinations taken directly from request headers without verifying that those destinations are safe to connect to.\n\nAffected versions:\nSpring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.springframework.ws:spring-ws-core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "5.0.0"
}, {
"fixed" : "5.0.2"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 5.0.1"
}
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.springframework.ws:spring-ws-core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.1.0"
}, {
"fixed" : "4.1.4"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 4.1.3"
}
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.springframework.ws:spring-ws-core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.0.0"
}, {
"last_affected" : "4.0.18"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.springframework.ws:spring-ws-core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.1.0"
}, {
"last_affected" : "3.1.8"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-40999"
}, {
"type" : "WEB",
"url" : "https://github.com/spring-projects/spring-ws/commit/5121a4e545803c4925e63c4ed015391be2605ba5"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/spring-projects/spring-ws"
}, {
"type" : "WEB",
"url" : "https://spring.io/security/cve-2026-40999"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-918" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-08-21T19:13:14Z",
"nvd_published_at" : "2026-06-11T07:16:27Z"
}
}