Medium severity · published Jun 24, 2026
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…
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JM
Jenkins MCP Server Plugin · Jenkins Project
All versions, or not specified · source: vendor
MS
Mcp Server · Jenkins
through 0.177.v629fdb_2557fe · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57300
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-57300
Vendor Advisory
https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3759
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