CVE-2026-22733: Spring Framework Authentication Bypass Vulnerability

HIGH
Advisory Identifier: GHSA-mgvc-8q2h-5pgc
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CVSS 8.2
CWE-288
Published
Advisory Summary

CVE-2026-22733 is a HIGH (CVSS 8.2) authentication bypass vulnerability (CWE-288: Authentication Bypass Using an Alternate Path or Channel) affecting Spring Framework libraries in the Maven ecosystem. The issue involves spring boot has an authentication bypass under actuator cloudfoundry endpoints. Remediation is available by upgrading affected packages to version 4.0.4, 3.5.12.

CVE-2026-22733 at a Glance

CVE Identifier CVE-2026-22733
GHSA Identifier GHSA-mgvc-8q2h-5pgc
Severity HIGH
CVSS v3.1 Base Score 8.2
CWE Classification CWE-288: Authentication Bypass Using an Alternate Path or Channel
Affected Product Spring Framework
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.2

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:L/A:N).

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 Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-22733

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.boot:spring-boot-starter-actuator fixed: 4.0.4 
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
    <version>4.0.4</version>
</dependency>
org.springframework.boot:spring-boot-starter-actuator fixed: 3.5.12 
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
    <version>3.5.12</version>
</dependency>
org.springframework.boot:spring-boot-starter-actuator fixed: Latest secure release 
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
    <version>Latest secure release</version>
</dependency>
org.springframework.boot:spring-boot-starter-actuator fixed: Latest secure release 
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
    <version>Latest secure release</version>
</dependency>
org.springframework.boot:spring-boot-starter-actuator fixed: Latest secure release 
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</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=org.springframework.boot

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-22733, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.springframework.boot

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 4.0.4), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.springframework.boot 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-288: Authentication Bypass Using an Alternate Path or Channel, where the product requires authentication, but the product has an alternate path or channel that does not require authentication. 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

Spring Boot applications with Actuator can be vulnerable to an "Authentication Bypass" vulnerability when an application endpoint that requires authentication is declared under the path used by the CloudFoundry Actuator endpoints. This issue affects Spring Security: from 4.0.0 through 4.0.3, from 3.5.0 through 3.5.11, from 3.4.0 through 3.4.14, from 3.3.0 through 3.3.17, from 2.7.0 through 2.7.31.

CVE-2026-22733 Affected Spring Framework Versions

5 component(s)
Fixed Versions:
4.0.43.5.12
Product / Package Ecosystem Affected Versions Fixed Version
org.springframework.boot:spring-boot-starter-actuator
maven/org.springframework.boot/spring-boot-starter-actuator
Maven
≥ 4.0.0-M1
< 4.0.4
4.0.4
org.springframework.boot:spring-boot-starter-actuator
maven/org.springframework.boot/spring-boot-starter-actuator
Maven
≥ 3.5.0
< 3.5.12
3.5.12
org.springframework.boot:spring-boot-starter-actuator
maven/org.springframework.boot/spring-boot-starter-actuator
Maven
≥ 3.4.0
≤ 3.4.13
org.springframework.boot:spring-boot-starter-actuator
maven/org.springframework.boot/spring-boot-starter-actuator
Maven
≥ 3.0.0
≤ 3.3.13
org.springframework.boot:spring-boot-starter-actuator
maven/org.springframework.boot/spring-boot-starter-actuator
Maven
≤ 2.7.18

References

NVD — CVE-2026-22733 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-22733
Spring Framework Source Repository REPOSITORY
https://github.com/spring-projects/spring-boot
Spring Framework Security Information SECURITY
https://spring.io/security/cve-2026-22733

Frequently Asked Questions

What is CVE-2026-22733?
CVE-2026-22733 is a security vulnerability in Spring Framework involving Spring Boot has an Authentication Bypass under Actuator CloudFoundry endpoints under CWE-288: Authentication Bypass Using an Alternate Path or Channel.
Which Spring Framework versions are affected?
Affected versions include releases prior to 4.0.4, 3.5.12 across affected packages: org.springframework.boot:spring-boot-starter-actuator.
What version fixes CVE-2026-22733?
Upgrading to 4.0.4, 3.5.12 (or the latest patched release for your respective branch) resolves the vulnerability.
Is spring-boot-starter-actuator affected?
Yes, org.springframework.boot:spring-boot-starter-actuator is affected in releases prior to 4.0.4, 3.5.12, Latest secure release. Upgrade your dependency to 4.0.4, 3.5.12, Latest secure release or later.
What is the CVSS score of CVE-2026-22733?
CVE-2026-22733 has a CVSS v3.1 base score of 8.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.
What CWE is associated with CVE-2026-22733?
CVE-2026-22733 is classified under CWE-288: Authentication Bypass Using an Alternate Path or Channel (The product requires authentication, but the product has an alternate path or channel that does not require authentication.).
How can I check Maven dependencies for CVE-2026-22733?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.springframework.boot'. 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-mgvc-8q2h-5pgc",
  "modified" : "2026-03-20T20:42:31Z",
  "published" : "2026-03-20T00:31:28Z",
  "aliases" : [ "CVE-2026-22733" ],
  "summary" : "Spring Boot has an Authentication Bypass under Actuator CloudFoundry endpoints",
  "details" : "Spring Boot applications with Actuator can be vulnerable to an \"Authentication Bypass\" vulnerability when an application endpoint that requires authentication is declared under the path used by the CloudFoundry Actuator endpoints. This issue affects Spring Security: from 4.0.0 through 4.0.3, from 3.5.0 through 3.5.11, from 3.4.0 through 3.4.14, from 3.3.0 through 3.3.17, from 2.7.0 through 2.7.31.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.boot:spring-boot-starter-actuator"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0-M1"
      }, {
        "fixed" : "4.0.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.boot:spring-boot-starter-actuator"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.5.0"
      }, {
        "fixed" : "3.5.12"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.boot:spring-boot-starter-actuator"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.4.0"
      }, {
        "last_affected" : "3.4.13"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.boot:spring-boot-starter-actuator"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "last_affected" : "3.3.13"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.boot:spring-boot-starter-actuator"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.7.18"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-22733"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/spring-projects/spring-boot"
  }, {
    "type" : "WEB",
    "url" : "https://spring.io/security/cve-2026-22733"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-288" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-20T20:42:31Z",
    "nvd_published_at" : "2026-03-20T00:16:15Z"
  }
}