CVE-2026-47892: Spring Framework Spring Framework Header Predicate Bypass Vulnerability

CRITICAL
Advisory Identifier: GHSA-9qf2-26p9-2q2q
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CVSS 9.8
CWE-863
Published
Advisory Summary

CVE-2026-47892 is a CRITICAL (CVSS 9.8) spring framework header predicate bypass vulnerability (CWE-863: Incorrect Authorization) affecting Spring Framework libraries in the Maven ecosystem. The issue involves spring framework header predicate bypass in webflux functional endpoints. Remediation is available by upgrading affected packages to version 7.0.9.

CVE-2026-47892 at a Glance

CVE Identifier CVE-2026-47892
GHSA Identifier GHSA-9qf2-26p9-2q2q
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-863: Incorrect Authorization
Affected Product Spring Framework
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-47892

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.

org.springframework:spring-webflux fixed: Latest secure release 
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webflux</artifactId>
    <version>Latest secure release</version>
</dependency>
org.springframework:spring-webflux fixed: Latest secure release 
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webflux</artifactId>
    <version>Latest secure release</version>
</dependency>
org.springframework:spring-webflux fixed: Latest secure release 
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webflux</artifactId>
    <version>Latest secure release</version>
</dependency>
org.springframework:spring-webflux fixed: Latest secure release 
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webflux</artifactId>
    <version>Latest secure release</version>
</dependency>
org.springframework:spring-webflux fixed: Latest secure release 
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webflux</artifactId>
    <version>Latest secure release</version>
</dependency>
org.springframework:spring-webflux fixed: 7.0.9 
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webflux</artifactId>
    <version>7.0.9</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=org.springframework

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-47892, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.springframework

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 7.0.9), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.springframework 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-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. 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

A WebFlux application using functional endpoints and deployed with DispatcherServlet may be vulnerable to a header predicate bypass in a pre-flight request. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.5.RELEASE - 5.2.25.RELEASE

CVE-2026-47892 Affected Spring Framework Versions

6 component(s)
Fixed Versions:
7.0.9
Product / Package Ecosystem Affected Versions Fixed Version
org.springframework:spring-webflux
maven/org.springframework/spring-webflux
Maven
≥ 5.2.5.RELEASE
≤ 5.2.25.RELEASE
org.springframework:spring-webflux
maven/org.springframework/spring-webflux
Maven
≥ 5.3.0
≤ 5.3.49
org.springframework:spring-webflux
maven/org.springframework/spring-webflux
Maven
≥ 6.0.0
≤ 6.0.30
org.springframework:spring-webflux
maven/org.springframework/spring-webflux
Maven
≥ 6.1.0
≤ 6.1.28
org.springframework:spring-webflux
maven/org.springframework/spring-webflux
Maven
≥ 6.2.0
≤ 6.2.19
org.springframework:spring-webflux
maven/org.springframework/spring-webflux
Maven
≥ 7.0.0
< 7.0.9
7.0.9

References

NVD — CVE-2026-47892 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47892
Spring Framework Source Repository REPOSITORY
https://github.com/spring-projects/spring-framework
Spring Framework Security Information SECURITY
https://spring.io/security/cve-2026-47892

Frequently Asked Questions

What is CVE-2026-47892?
CVE-2026-47892 is a security vulnerability in Spring Framework involving Spring Framework Header Predicate Bypass in WebFlux Functional Endpoints under CWE-863: Incorrect Authorization.
Which Spring Framework versions are affected?
Affected versions include releases prior to 7.0.9 across affected packages: org.springframework:spring-webflux.
What version fixes CVE-2026-47892?
Upgrading to 7.0.9 (or the latest patched release for your respective branch) resolves the vulnerability.
Is spring-webflux affected?
Yes, org.springframework:spring-webflux is affected in releases prior to Latest secure release, 7.0.9. Upgrade your dependency to Latest secure release, 7.0.9 or later.
What is the CVSS score of CVE-2026-47892?
CVE-2026-47892 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-47892?
CVE-2026-47892 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Maven dependencies for CVE-2026-47892?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.springframework'. 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-9qf2-26p9-2q2q",
  "modified" : "2026-10-07T13:20:45Z",
  "published" : "2026-08-27T06:31:34Z",
  "aliases" : [ "CVE-2026-47892" ],
  "summary" : "Spring Framework Header Predicate Bypass in WebFlux Functional Endpoints",
  "details" : "A WebFlux application using functional endpoints and deployed with DispatcherServlet may be vulnerable to a header predicate bypass in a pre-flight request.\nSpring Framework 7.0.0 - 7.0.8\nSpring Framework 6.2.0 - 6.2.19\nSpring Framework 6.1.0 - 6.1.28\nSpring Framework 6.0.0 - 6.0.30\nSpring Framework 5.3.0 - 5.3.49\nSpring Framework 5.2.5.RELEASE - 5.2.25.RELEASE",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework:spring-webflux"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.2.5.RELEASE"
      }, {
        "last_affected" : "5.2.25.RELEASE"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework:spring-webflux"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.3.0"
      }, {
        "last_affected" : "5.3.49"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework:spring-webflux"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "last_affected" : "6.0.30"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework:spring-webflux"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.1.0"
      }, {
        "last_affected" : "6.1.28"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework:spring-webflux"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.2.0"
      }, {
        "last_affected" : "6.2.19"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework:spring-webflux"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.0.0"
      }, {
        "fixed" : "7.0.9"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 7.0.8"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-47892"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/spring-projects/spring-framework"
  }, {
    "type" : "WEB",
    "url" : "https://spring.io/security/cve-2026-47892"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-10-07T13:20:45Z",
    "nvd_published_at" : "2026-08-27T06:17:20Z"
  }
}