What is CVE-2026-57300?

CVE-2026-57300 is a medium-severity vulnerability in Jenkins Project Mcp Server Plugin, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-06-24.

How severe is CVE-2026-57300?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Jenkins Project Mcp Server Plugin

CVE-2026-57300

A missing permission check in Jenkins MCP Server Plugin 0.177.v629fdb_2557fe and earlier allows attackers with Item/Read permission to read the Pipeline replay scripts of jobs they can access.

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Jenkins Project Mcp Server Plugin — versions 0.172.174.v9f72da_90a_710, 0.178.vffe5a_e770f3b_

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

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

Frequently asked questions

What is CVE-2026-57300?: CVE-2026-57300 is a medium-severity vulnerability in Jenkins Project Mcp Server Plugin, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-06-24.
How severe is CVE-2026-57300?: Medium severity. CVSS v3 base score is 4.3 out of 10.