CVE-2026-41008: Spring Framework Authorization Endpoint Performs Insufficient Validation Vulnerability

MODERATE
Advisory Identifier: GHSA-4r8w-73jc-3m7q
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CVSS 6.1
CWE-601
Published
Advisory Summary

CVE-2026-41008 is a MODERATE (CVSS 6.1) authorization endpoint performs insufficient validation vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Spring Framework libraries in the Maven ecosystem. The issue involves authorization endpoint performs insufficient validation of the request_uri parameter. Remediation is available by upgrading affected packages to version 7.0.6, 1.5.8.

CVE-2026-41008 at a Glance

CVE Identifier CVE-2026-41008
GHSA Identifier GHSA-4r8w-73jc-3m7q
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Product Spring Framework
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.1

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:R/S:C/C:L/I:L/A:N).

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

How to Fix CVE-2026-41008

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.security:spring-security-oauth2-authorization-server fixed: 7.0.6 
<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-oauth2-authorization-server</artifactId>
    <version>7.0.6</version>
</dependency>
org.springframework.security:spring-security-oauth2-authorization-server fixed: 1.5.8 
<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-oauth2-authorization-server</artifactId>
    <version>1.5.8</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.security

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-41008, inspect your build dependencies using the Maven Dependency Plugin:

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

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 7.0.6), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.springframework.security 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-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. 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 Security Authorization Server's authorization endpoint performs insufficient validation of the request_uri parameter. An attacker can craft a malicious authorization request containing an invalid request_uri and an arbitrary, unvalidated redirect_uri, which can lead to an Open Redirect vulnerability. Affected versions: Spring Security 7.0.0 through 7.0.5. Spring Authorization Server 1.5.0 through 1.5.7.

CVE-2026-41008 Affected Spring Framework Versions

2 component(s)
Fixed Versions:
7.0.61.5.8
Product / Package Ecosystem Affected Versions Fixed Version
org.springframework.security:spring-security-oauth2-authorization-server
maven/org.springframework.security/spring-security-oauth2-authorization-server
Maven
≥ 7.0.0
< 7.0.6
7.0.6
org.springframework.security:spring-security-oauth2-authorization-server
maven/org.springframework.security/spring-security-oauth2-authorization-server
Maven
≥ 1.5.0
< 1.5.8
1.5.8

References

NVD — CVE-2026-41008 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41008
Spring Framework Source Repository REPOSITORY
https://github.com/spring-projects/spring-authorization-server
Spring Framework Release RELEASE
https://github.com/spring-projects/spring-security/releases/tag/7.0.6
Spring Framework Security Information SECURITY
https://spring.io/security/cve-2026-41008

Frequently Asked Questions

What is CVE-2026-41008?
CVE-2026-41008 is a security vulnerability in Spring Framework involving Authorization endpoint performs insufficient validation of the request_uri parameter under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
Which Spring Framework versions are affected?
Affected versions include releases prior to 7.0.6, 1.5.8 across affected packages: org.springframework.security:spring-security-oauth2-authorization-server.
What version fixes CVE-2026-41008?
Upgrading to 7.0.6, 1.5.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is spring-security-oauth2-authorization-server affected?
Yes, org.springframework.security:spring-security-oauth2-authorization-server is affected in releases prior to 7.0.6, 1.5.8. Upgrade your dependency to 7.0.6, 1.5.8 or later.
What is the CVSS score of CVE-2026-41008?
CVE-2026-41008 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2026-41008?
CVE-2026-41008 is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect') (The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.).
How can I check Maven dependencies for CVE-2026-41008?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.springframework.security'. 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-4r8w-73jc-3m7q",
  "modified" : "2026-08-12T16:23:07Z",
  "published" : "2026-06-10T00:31:51Z",
  "aliases" : [ "CVE-2026-41008" ],
  "summary" : "Spring Security OAuth2 Authorization Server: Authorization endpoint performs insufficient validation of the request_uri parameter",
  "details" : "Spring Security Authorization Server's authorization endpoint performs insufficient validation of the request_uri parameter. An attacker can craft a malicious authorization request containing an invalid request_uri and an arbitrary, unvalidated redirect_uri, which can lead to an Open Redirect vulnerability.\n\nAffected versions:\nSpring Security 7.0.0 through 7.0.5.\nSpring Authorization Server 1.5.0 through 1.5.7.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.security:spring-security-oauth2-authorization-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.0.0"
      }, {
        "fixed" : "7.0.6"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 7.0.5"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.security:spring-security-oauth2-authorization-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.5.0"
      }, {
        "fixed" : "1.5.8"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.5.7"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-41008"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/spring-projects/spring-authorization-server"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/spring-projects/spring-security/releases/tag/7.0.6"
  }, {
    "type" : "WEB",
    "url" : "https://spring.io/security/cve-2026-41008"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-12T16:23:07Z",
    "nvd_published_at" : "2026-06-10T00:16:50Z"
  }
}