CVE-2023-26120: Xxl job Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-4j2p-x79m-jcj8
Share
CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2023-26120 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Xxl job libraries in the Maven ecosystem. The issue involves xxl-job vulnerable to cross-site scripting. Remediation is available in the latest vendor maintenance releases.

CVE-2023-26120 at a Glance

CVE Identifier CVE-2023-26120
GHSA Identifier GHSA-4j2p-x79m-jcj8
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Xxl job
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-2023-26120

To remediate this vulnerability, upgrade all affected Xxl job dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

com.xuxueli:xxl-job fixed: Latest secure release 
<dependency>
    <groupId>com.xuxueli</groupId>
    <artifactId>xxl-job</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=com.xuxueli

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-26120, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.xuxueli

Analyze the terminal output to locate any version of Xxl job in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.xuxueli 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Xxl job, 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

XXL-JOB (`com.xuxueli:xxl-job`) versions 2.4.0 and earlier are vulnerable to cross-site scripting (XSS). An HTML uploaded payload can be executed successfully through `/xxl-job-admin/user/add` and `/xxl-job-admin/user/update`.

CVE-2023-26120 Affected Xxl job Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
com.xuxueli:xxl-job
maven/com.xuxueli/xxl-job
Maven
≤ 2.4.0

References

NVD — CVE-2023-26120 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-26120
Xxl job Source Repository REPOSITORY
https://github.com/xuxueli/xxl-job
Xxl job Security Information SECURITY
https://security.snyk.io/vuln/SNYK-JAVA-COMXUXUELI-3248764

Frequently Asked Questions

What is CVE-2023-26120?
CVE-2023-26120 is a security vulnerability in Xxl job involving XXL-JOB vulnerable to Cross-site Scripting under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Xxl job versions are affected?
Affected versions include releases prior to current release patches across affected packages: com.xuxueli:xxl-job.
What version fixes CVE-2023-26120?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is xxl-job affected?
Yes, com.xuxueli:xxl-job is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2023-26120?
CVE-2023-26120 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-2023-26120?
CVE-2023-26120 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Maven dependencies for CVE-2023-26120?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.xuxueli'. 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-4j2p-x79m-jcj8",
  "modified" : "2023-04-18T14:53:28Z",
  "published" : "2023-04-10T06:30:16Z",
  "aliases" : [ "CVE-2023-26120" ],
  "summary" : "XXL-JOB vulnerable to Cross-site Scripting",
  "details" : "XXL-JOB (`com.xuxueli:xxl-job`) versions 2.4.0 and earlier are vulnerable to cross-site scripting (XSS). An HTML uploaded payload can be executed successfully through `/xxl-job-admin/user/add` and `/xxl-job-admin/user/update`.",
  "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" : "com.xuxueli:xxl-job"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-26120"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/xuxueli/xxl-job"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-JAVA-COMXUXUELI-3248764"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-04-10T16:45:23Z",
    "nvd_published_at" : "2023-04-10T05:15:00Z"
  }
}