TI-2025-39583 Aliases CVE-2025-64132 GHSA-mrpq-9jr3-rqq9

Missing authorization in Jenkins MCP Server Plugin

LOW 24CWE-862Published 2025-10-29 · Updated 2025-11-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

Jenkins MCP Server Plugin 0.84.v50ca_24ef83f2 and earlier does not perform permission checks in multiple MCP tools, allowing attackers to trigger builds and obtain information about job and cloud configuration they should not be able to access.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00262 18th percentileScored 2026-11-07

Fix Fixed io.jenkins.plugins:mcp-server (Maven): 0.86.v7d3355e6a

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Jenkins	Jenkins MCP Server Plugin	up to 0.84.v50ca_24ef83f2	—	No fix listed	CNA
—	io.jenkins.plugins:mcp-server (Maven)	before 0.86.v7d3355e6a	0.86.v7d3355e6a	Patch available	GHSA-mrpq-9jr3-rqq9

Jenkins MCP Server Plugin VendorJenkins Affected up to 0.84.v50ca_24ef83f2 Fixed in — No fix listed CNA
io.jenkins.plugins:mcp-server (Maven) Vendor— Affected before 0.86.v7d3355e6a Fixed in 0.86.v7d3355e6a Patch available GHSA-mrpq-9jr3-rqq9

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:jenkins:mcp_server::::::jenkins::*	before 0.86.v7d3355e6a_a_18	Vulnerable	Jenkins

cpe:2.3:a:jenkins:mcp_server:*:*:*:*:*:jenkins:*:* Versions before 0.86.v7d3355e6a_a_18 Vulnerable ·Jenkins

Remediation

Fix · GHSA-mrpq-9jr3-rqq9 io.jenkins.plugins:mcp-server (Maven) Fixed in 0.86.v7d3355e6a Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-64132
2026-10-03 Alias added: GHSA-mrpq-9jr3-rqq9

References

Advisory 3

Other 2

TI-2026-41237 Missing authorization in Jenkins MCP Server Plugin CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences