CVE-2026-57289: Bitbucket push and pull request Jenkins Bitbucket Push And Pull Vulnerability

Q: What is CVE-2026-57289?

CVE-2026-57289 is a security vulnerability in Bitbucket push and pull request involving Jenkins Bitbucket Push and Pull Request Plugin unconditionally disables SSL/TLS certificate validation under CWE-295: Improper Certificate Validation.

Q: Which Bitbucket push and pull request versions are affected?

Affected versions include releases prior to 3.3.9 across affected packages: io.jenkins.plugins:bitbucket-push-and-pull-request.

Q: What version fixes CVE-2026-57289?

Upgrading to 3.3.9 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is bitbucket-push-and-pull-request affected?

Yes, io.jenkins.plugins:bitbucket-push-and-pull-request is affected in releases prior to 3.3.9. Upgrade your dependency to 3.3.9 or later.

Q: What is the CVSS score of CVE-2026-57289?

CVE-2026-57289 has a CVSS v3.1 base score of 4.8 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Q: What CWE is associated with CVE-2026-57289?

CVE-2026-57289 is classified under CWE-295: Improper Certificate Validation (The product does not validate, or incorrectly validates, a certificate.).

Q: How can I check Maven dependencies for CVE-2026-57289?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.jenkins.plugins'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

MODERATE

Advisory Identifier: GHSA-jwhr-h7pc-3974

CVSS 4.8

CWE-295

Published 2026-06-24

Advisory Summary

CVE-2026-57289 is a MODERATE (CVSS 4.8) jenkins bitbucket push and pull vulnerability (CWE-295: Improper Certificate Validation) affecting Bitbucket push and pull request libraries in the Maven ecosystem. The issue involves jenkins bitbucket push and pull request plugin unconditionally disables ssl/tls certificate validation. Remediation is available by upgrading affected packages to version 3.3.9.

CVE-2026-57289 at a Glance

CVE Identifier CVE-2026-57289

GHSA Identifier GHSA-jwhr-h7pc-3974

Severity MODERATE

CVSS v3.1 Base Score 4.8

CWE Classification CWE-295: Improper Certificate Validation

Affected Product Bitbucket push and pull request

Package Ecosystem Maven

Published Date 2026-06-24

Last Updated 2026-09-25

Security Impact

CVSS: 4.8

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:L/I:L/A:N).

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 Low (C:L)

Integrity Low (I:L)

Availability None (A:N)

How to Fix CVE-2026-57289

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

io.jenkins.plugins:bitbucket-push-and-pull-request fixed: 3.3.9

<dependency>
    <groupId>io.jenkins.plugins</groupId>
    <artifactId>bitbucket-push-and-pull-request</artifactId>
    <version>3.3.9</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=io.jenkins.plugins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-57289, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=io.jenkins.plugins

Analyze the terminal output to locate any version of Bitbucket push and pull request in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.3.9), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.jenkins.plugins 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-295: Improper Certificate Validation, where the product does not validate, or incorrectly validates, a certificate. In Bitbucket push and pull request, 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

Jenkins Bitbucket Push and Pull Request Plugin 3.3.8 and earlier unconditionally disables SSL/TLS certificate and hostname validation for the connections it makes to Bitbucket Server using Bearer token authentication. Because the Bearer token is transmitted in these requests, this allows attackers able to intercept network traffic to capture the token and impersonate the Jenkins controller to Bitbucket Server. Bitbucket Push and Pull Request Plugin 3.3.9 validates SSL/TLS certificates and hostnames for the connections it makes to Bitbucket Server using Bearer token authentication, using the trust store configured for the Jenkins controller JVM.

CVE-2026-57289 Affected Bitbucket push and pull request Versions

1 component(s)

Fixed Versions:

3.3.9

Product / Package	Ecosystem	Affected Versions	Fixed Version
io.jenkins.plugins:bitbucket-push-and-pull-request maven/io.jenkins.plugins/bitbucket-push-and-pull-request	Maven	< 3.3.9	3.3.9

References

NVD — CVE-2026-57289 NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-57289

Security Fix Commit FIX COMMIT

https://github.com/jenkinsci/bitbucket-push-and-pull-request-plugin/commit/5a0ae2155692beab48c6a0578a3eff22304a2014

Bitbucket push and pull request Source Repository REPOSITORY

https://github.com/jenkinsci/bitbucket-push-and-pull-request-plugin

Bitbucket push and pull request Release RELEASE

https://github.com/jenkinsci/bitbucket-push-and-pull-request-plugin/releases/tag/bitbucket-push-and-pull-request-3.3.9

Bitbucket push and pull request Security Information SECURITY

https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3856

Frequently Asked Questions

What is CVE-2026-57289?

CVE-2026-57289 is a security vulnerability in Bitbucket push and pull request involving Jenkins Bitbucket Push and Pull Request Plugin unconditionally disables SSL/TLS certificate validation under CWE-295: Improper Certificate Validation.

Which Bitbucket push and pull request versions are affected?

Affected versions include releases prior to 3.3.9 across affected packages: io.jenkins.plugins:bitbucket-push-and-pull-request.

What version fixes CVE-2026-57289?

Upgrading to 3.3.9 (or the latest patched release for your respective branch) resolves the vulnerability.

Is bitbucket-push-and-pull-request affected?

Yes, io.jenkins.plugins:bitbucket-push-and-pull-request is affected in releases prior to 3.3.9. Upgrade your dependency to 3.3.9 or later.

What is the CVSS score of CVE-2026-57289?

CVE-2026-57289 has a CVSS v3.1 base score of 4.8 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

What CWE is associated with CVE-2026-57289?

CVE-2026-57289 is classified under CWE-295: Improper Certificate Validation (The product does not validate, or incorrectly validates, a certificate.).

How can I check Maven dependencies for CVE-2026-57289?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.jenkins.plugins'. 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-jwhr-h7pc-3974",
  "modified" : "2026-09-25T19:10:03Z",
  "published" : "2026-06-24T15:31:47Z",
  "aliases" : [ "CVE-2026-57289" ],
  "summary" : "Jenkins Bitbucket Push and Pull Request Plugin unconditionally disables SSL/TLS certificate validation",
  "details" : "Jenkins Bitbucket Push and Pull Request Plugin 3.3.8 and earlier unconditionally disables SSL/TLS certificate and hostname validation for the connections it makes to Bitbucket Server using Bearer token authentication.\n\nBecause the Bearer token is transmitted in these requests, this allows attackers able to intercept network traffic to capture the token and impersonate the Jenkins controller to Bitbucket Server.\n\nBitbucket Push and Pull Request Plugin 3.3.9 validates SSL/TLS certificates and hostnames for the connections it makes to Bitbucket Server using Bearer token authentication, using the trust store configured for the Jenkins controller JVM.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.jenkins.plugins:bitbucket-push-and-pull-request"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.3.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-57289"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/bitbucket-push-and-pull-request-plugin/commit/5a0ae2155692beab48c6a0578a3eff22304a2014"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/bitbucket-push-and-pull-request-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/bitbucket-push-and-pull-request-plugin/releases/tag/bitbucket-push-and-pull-request-3.3.9"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3856"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-295" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-25T19:10:03Z",
    "nvd_published_at" : "2026-06-24T14:17:35Z"
  }
}

CVSS V3

4.8 MODERATE