CVE-2026-57300Network attack vector

Pipeline script disclosure via unchecked replay tool

Published Jun 24, 2026 · Updated Jun 24, 2026

Missing authorization in Jenkins MCP Server Plugin 0.177.v629fdb_2557fe and earlier lets remote authenticated users read Pipeline scripts. The getReplayScripts MCP tool returns a Pipeline build's replay script without requiring Item/Extended Read permission. Item/Read permission on an accessible job is sufficient, exposing its Pipeline source but not granting job modification.

CVSS severity4.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Jenkins MCP Server Plugin 0.177.v629fdb_2557fe and earlier lets remote authenticated users read Pipeline scripts. The getReplayScripts MCP tool returns a Pipeline build's replay script without requiring Item/Extended Read permission. Item/Read permission on an accessible job is sufficient, exposing its Pipeline source but not granting job modification.

The record

CVE
CVE-2026-57300
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
Jenkins Project
Product
MCP Server Plugin
Classifications
CWE-862, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · MCP Server PluginAffected versions are unavailable in this record.

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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