CVE-2016-3726: Jenkins core Jenkins Affected By Open Redirect Vulnerability

HIGH
Advisory Identifier: GHSA-rx4r-gxpc-h85x
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CVSS 7.4
CWE-601
Published
Advisory Summary

CVE-2016-3726 is a HIGH (CVSS 7.4) jenkins affected by open redirect vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Jenkins core libraries in the Maven ecosystem. The issue involves jenkins affected by open redirect vulnerability. Remediation is available by upgrading affected packages to version 2.3, 1.651.2.

CVE-2016-3726 at a Glance

CVE Identifier CVE-2016-3726
GHSA Identifier GHSA-rx4r-gxpc-h85x
Severity HIGH
CVSS v3.1 Base Score 7.4
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Product Jenkins core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/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 None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2016-3726

To remediate this vulnerability, upgrade all affected Jenkins core 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.jenkins-ci.main:jenkins-core fixed: 2.3 
<dependency>
    <groupId>org.jenkins-ci.main</groupId>
    <artifactId>jenkins-core</artifactId>
    <version>2.3</version>
</dependency>
org.jenkins-ci.main:jenkins-core fixed: 1.651.2 
<dependency>
    <groupId>org.jenkins-ci.main</groupId>
    <artifactId>jenkins-core</artifactId>
    <version>1.651.2</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.jenkins-ci.main

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2016-3726, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.jenkins-ci.main

Analyze the terminal output to locate any version of Jenkins core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.jenkins-ci.main 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 Jenkins core, 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

Multiple open redirect vulnerabilities in Jenkins before 2.3 and LTS before 1.651.2 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via unspecified vectors related to "scheme-relative" URLs.

CVE-2016-3726 Affected Jenkins core Versions

2 component(s)
Fixed Versions:
2.31.651.2
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.main:jenkins-core
maven/org.jenkins-ci.main/jenkins-core
Maven
≥ 1.652
< 2.3
2.3
org.jenkins-ci.main:jenkins-core
maven/org.jenkins-ci.main/jenkins-core
Maven
< 1.651.2
1.651.2

References

NVD — CVE-2016-3726 NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-3726
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/jenkins/commit/2ed0c046dfbb2003a17df27c53777e72c6eaff25
access.redhat.com/errata/rhsa-2016:12... WEB
https://access.redhat.com/errata/RHSA-2016:1206
Jenkins core Source Repository REPOSITORY
https://github.com/jenkinsci/jenkins
Jenkins core Security Information SECURITY
https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2016-05-11
Jenkins core Security Information SECURITY
https://www.cloudbees.com/jenkins-security-advisory-2016-05-11
rhn.redhat.com/errata/rhsa-2016-17... WEB
http://rhn.redhat.com/errata/RHSA-2016-1773.html

Frequently Asked Questions

What is CVE-2016-3726?
CVE-2016-3726 is a security vulnerability in Jenkins core involving Jenkins affected by Open Redirect Vulnerability under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
Which Jenkins core versions are affected?
Affected versions include releases prior to 2.3, 1.651.2 across affected packages: org.jenkins-ci.main:jenkins-core.
What version fixes CVE-2016-3726?
Upgrading to 2.3, 1.651.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is jenkins-core affected?
Yes, org.jenkins-ci.main:jenkins-core is affected in releases prior to 2.3, 1.651.2. Upgrade your dependency to 2.3, 1.651.2 or later.
What is the CVSS score of CVE-2016-3726?
CVE-2016-3726 has a CVSS v3.1 base score of 7.4 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N.
What CWE is associated with CVE-2016-3726?
CVE-2016-3726 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-2016-3726?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jenkins-ci.main'. 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-rx4r-gxpc-h85x",
  "modified" : "2025-03-13T18:00:43Z",
  "published" : "2022-05-14T03:57:44Z",
  "aliases" : [ "CVE-2016-3726" ],
  "summary" : "Jenkins affected by Open Redirect Vulnerability",
  "details" : "Multiple open redirect vulnerabilities in Jenkins before 2.3 and LTS before 1.651.2 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via unspecified vectors related to \"scheme-relative\" URLs.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.main:jenkins-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.652"
      }, {
        "fixed" : "2.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.main:jenkins-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.651.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-3726"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/jenkins/commit/2ed0c046dfbb2003a17df27c53777e72c6eaff25"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2016:1206"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/jenkins"
  }, {
    "type" : "WEB",
    "url" : "https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2016-05-11"
  }, {
    "type" : "WEB",
    "url" : "https://www.cloudbees.com/jenkins-security-advisory-2016-05-11"
  }, {
    "type" : "WEB",
    "url" : "http://rhn.redhat.com/errata/RHSA-2016-1773.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-13T18:00:43Z",
    "nvd_published_at" : "2016-05-17T14:08:00Z"
  }
}