CVE-2026-41848: Spring Framework Denial of Service Vulnerability

LOW
Advisory Identifier: GHSA-659m-px2c-25wj
Share
CVSS 3.7
CWE-1333
Published
Advisory Summary

CVE-2026-41848 is a LOW (CVSS 3.7) denial of service vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Spring Framework libraries in the Maven ecosystem. The issue involves spring framework denial of service via antpathmatcher. Remediation is available by upgrading affected packages to version 7.0.8, 6.2.19.

CVE-2026-41848 at a Glance

CVE Identifier CVE-2026-41848
GHSA Identifier GHSA-659m-px2c-25wj
Severity LOW
CVSS v3.1 Base Score 3.7
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Spring Framework
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

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

How to Fix CVE-2026-41848

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-core fixed: 7.0.8 
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>7.0.8</version>
</dependency>
org.springframework:spring-core fixed: 6.2.19 
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>6.2.19</version>
</dependency>
org.springframework:spring-core fixed: Latest secure release 
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>Latest secure release</version>
</dependency>
org.springframework:spring-core fixed: Latest secure release 
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</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

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-41848, 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 7.0.8), 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-1333: Inefficient Regular Expression Complexity, where the product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential. 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

Applications may be vulnerable to a Regular Expression Denial of Service (ReDoS) attack if an attacker is able to provide a pattern which is then directly or indirectly supplied to one of the following methods in AntPathMatcher: match(String pattern, String path), matchStart(String pattern, String path), extractUriTemplateVariables(String pattern, String path). Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

CVE-2026-41848 Affected Spring Framework Versions

4 component(s)
Fixed Versions:
7.0.86.2.19
Product / Package Ecosystem Affected Versions Fixed Version
org.springframework:spring-core
maven/org.springframework/spring-core
Maven
≥ 7.0.0
< 7.0.8
7.0.8
org.springframework:spring-core
maven/org.springframework/spring-core
Maven
≥ 6.2.0
< 6.2.19
6.2.19
org.springframework:spring-core
maven/org.springframework/spring-core
Maven
≥ 6.1.0
≤ 6.1.21
org.springframework:spring-core
maven/org.springframework/spring-core
Maven
≤ 5.3.39

References

NVD — CVE-2026-41848 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41848
Security Fix Commit FIX COMMIT
https://github.com/spring-projects/spring-framework/commit/12b44f2545a1bec6150c7a05e66092c732597a94
Spring Framework Source Repository REPOSITORY
https://github.com/spring-projects/spring-framework
Spring Framework Release RELEASE
https://github.com/spring-projects/spring-framework/releases/tag/v6.2.19
Spring Framework Release RELEASE
https://github.com/spring-projects/spring-framework/releases/tag/v7.0.8
Spring Framework Security Information SECURITY
https://spring.io/security/cve-2026-41848

Frequently Asked Questions

What is CVE-2026-41848?
CVE-2026-41848 is a security vulnerability in Spring Framework involving Spring Framework Denial of Service via AntPathMatcher under CWE-1333: Inefficient Regular Expression Complexity.
Which Spring Framework versions are affected?
Affected versions include releases prior to 7.0.8, 6.2.19 across affected packages: org.springframework:spring-core.
What version fixes CVE-2026-41848?
Upgrading to 7.0.8, 6.2.19 (or the latest patched release for your respective branch) resolves the vulnerability.
Is spring-core affected?
Yes, org.springframework:spring-core is affected in releases prior to 7.0.8, 6.2.19, Latest secure release. Upgrade your dependency to 7.0.8, 6.2.19, Latest secure release or later.
What is the CVSS score of CVE-2026-41848?
CVE-2026-41848 has a CVSS v3.1 base score of 3.7 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2026-41848?
CVE-2026-41848 is classified under CWE-1333: Inefficient Regular Expression Complexity (The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.).
How can I check Maven dependencies for CVE-2026-41848?
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-659m-px2c-25wj",
  "modified" : "2026-07-30T18:29:22Z",
  "published" : "2026-06-09T06:31:58Z",
  "aliases" : [ "CVE-2026-41848" ],
  "summary" : "Spring Framework Denial of Service via AntPathMatcher",
  "details" : "Applications may be vulnerable to a Regular Expression Denial of Service (ReDoS) attack if an attacker is able to provide a pattern which is then directly or indirectly supplied to one of the following methods in AntPathMatcher: match(String pattern, String path), matchStart(String pattern, String path), extractUriTemplateVariables(String pattern, String path).\n\nAffected versions:\nSpring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework:spring-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.0.0"
      }, {
        "fixed" : "7.0.8"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 7.0.7"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework:spring-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.2.0"
      }, {
        "fixed" : "6.2.19"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 6.2.18"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework:spring-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.1.0"
      }, {
        "last_affected" : "6.1.21"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework:spring-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "5.3.39"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-41848"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/spring-projects/spring-framework/commit/12b44f2545a1bec6150c7a05e66092c732597a94"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/spring-projects/spring-framework"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/spring-projects/spring-framework/releases/tag/v6.2.19"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/spring-projects/spring-framework/releases/tag/v7.0.8"
  }, {
    "type" : "WEB",
    "url" : "https://spring.io/security/cve-2026-41848"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-30T18:29:21Z",
    "nvd_published_at" : "2026-06-09T05:16:36Z"
  }
}