GitHub MCP Server: Nil Pointer Dereference DoS in completion/complete Handler
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| github | github-mcp-server | affected |
|
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Github | Github-mcp-server |
|
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-w4q6-qw23-4rg7 | GitHub MCP Server has Nil Pointer Dereference DoS in completion/complete Handler |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.772% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Github
Github github-mcp-server |
|
| Vendors & Products |
Github
Github github-mcp-server |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | GitHub MCP Server is GitHub's official MCP Server. Prior to 1.1.0, the CompletionsHandler function in pkg/github/server.go accesses params.Ref without first checking whether it is nil, so a completion/complete request with a missing or empty ref field triggers a nil pointer dereference and a Go runtime panic; because the crash occurs before any authentication or token validation, any unauthenticated client able to send JSON-RPC messages can crash the server, resulting in a complete denial of service. This issue is fixed in version 1.1.0. | |
| Title | GitHub MCP Server: Nil Pointer Dereference DoS in completion/complete Handler | |
| Weaknesses | CWE-476 | |
| References |
| |
| Metrics |
cvssV3_1
|