| Package | Affected versions | Patched versions |
|---|---|---|
| io.jenkins.plugins:mcp-server | < 0.86.v7d3355e6a | 0.86.v7d3355e6a |
| mcp server | < 0.86.v7d3355e6a_a_18 | 0.86.v7d3355e6a_a_18 |
Jenkins MCP Server Plugin 0.84.v50ca_24ef83f2 and earlier does not perform permission checks in several MCP tools.
This allows to do the following:
Attackers with Item/Read permission can obtain information about the configured SCM in a job despite lacking Item/Extended Read permission (getJobScm).
Attackers with Item/Read permission can trigger new builds of a job despite lacking Item/Build permission (triggerBuild).
Attackers without Overall/Read permission can retrieve the names of configured clouds (getStatus).
MCP Server Plugin 0.86.v7d3355e6a_a_18 performs permission checks for the affected MCP tools.
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