Cyber Resilience

CVE-2025-64132

Access Control in Jenkins Mcp Server ≤ 0.86.v7d3355e6a_a_18

Published
29 October 2025
Modified
22 December 2025
Patch / advisory
CVSS Score v3.1 5.4
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS Score 0.0024 16th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2025-64132 is a medium-severity Missing Authorization (CWE-862) vulnerability in Jenkins Mcp Server. Its CVSS base score is 5.4 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data from Local System (T1005); ranked at the 16th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

This vulnerability is AI-related — categorised as AI Agent Protocols and Integrations; in the Protocol-Specific Risks risk domain.

The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AC-6 (Least Privilege) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

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.

CWE(s)

AI Security AnalysisAI

AI Category
AI Agent Protocols and Integrations
Risk Domain
Protocol-Specific Risks
OWASP Top 10 for LLMs 2025
None mapped
Classification Reason
Matched keywords: mcp

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
T1526 Cloud Service Discovery Discovery
An adversary may attempt to enumerate the cloud services running on a system after gaining access.
Why these techniques?

Missing permission checks enable collection of local system data such as job SCM configurations (T1005, T1083) and discovery of configured cloud services (T1526).

CVEs Like This One

CVE-2023-40344Same vendor: Jenkins
CVE-2023-28675Same vendor: Jenkins
CVE-2023-50769Same vendor: Jenkins
CVE-2023-25766Same vendor: Jenkins
CVE-2025-58460Same vendor: Jenkins
CVE-2023-24436Same vendor: Jenkins
CVE-2023-49654Same vendor: Jenkins
CVE-2023-24451Same vendor: Jenkins
CVE-2023-28673Same vendor: Jenkins
CVE-2023-30526Same vendor: Jenkins

Affected Assets

jenkins
mcp server
≤ 0.86.v7d3355e6a_a_18

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • AC-3 Access Enforcement
  • AC-6 Least Privilege
  • SI-2 Flaw Remediation
Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)
  • 5 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)

Mitigating Controls (NIST 800-53 r5) AI

prevent

Directly enforces authorization checks on MCP tool invocations so that builds and job/cloud configuration data cannot be accessed without the required permissions.

prevent

Limits the privileges granted to any account that reaches the MCP tools, reducing the impact of missing per-tool permission checks.

prevent

Requires prompt application of the vendor fix that adds the missing permission checks to the affected MCP Server Plugin.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-05 full match
prevents

Explicitly requires defining, enforcing, and reviewing authorizations and least privilege, directly preventing missing authorization checks.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

prevents

Requiring authentication and credentials before any access occurs eliminates the absence of authorization checks that would otherwise allow an unauthenticated actor to reach protected resources.

prevents

Requiring formal authorization of every access request before rights are granted ensures that checks for required permissions are performed, preventing missing authorization checks from being introduced.

prevents

Mandatory authorization checks and central records of granted rights ensure that every access attempt is preceded by an explicit decision rather than relying on missing checks.

mitigates

Segregating the approval of access rights from their implementation provides an independent check that reduces the impact of missing authorization checks in the resulting system configuration.

detects

By requiring competent outsiders to verify that every function enforces the need-to-know principle, the control lowers the likelihood that missing authorization checks persist undetected.

prevents

Defining authorization responsibilities and reviewing risk-treatment progress throughout the project lifecycle catches missing authorization checks before the system is deployed.

References