What is CVE-2026-57289?

CVE-2026-57289 is a medium-severity vulnerability in Jenkins Project Bitbucket Push And Pull Request Plugin, classified under Improper Certificate Validation. CVSS score: 4.8/10. Published 2026-06-24.

How severe is CVE-2026-57289?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Jenkins Project Bitbucket Push And Pull Request Plugin

CVE-2026-57289

Jenkins Bitbucket Push and Pull Request Plugin 3.3.8 and earlier unconditionally disables SSL/TLS certificate and hostname validation for connections sending Bearer token authenticated requests to the configured Bitbucket Server endpoint…

Vulnerability class: Improper Certificate Validation

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Jenkins Project Bitbucket Push And Pull Request Plugin — versions 0

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

jenkinsci-cert@googlegroups.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-57289?: CVE-2026-57289 is a medium-severity vulnerability in Jenkins Project Bitbucket Push And Pull Request Plugin, classified under Improper Certificate Validation. CVSS score: 4.8/10. Published 2026-06-24.
How severe is CVE-2026-57289?: Medium severity. CVSS v3 base score is 4.8 out of 10.