vulnerability / NVI-00010758 / Revision 1
TypeSpec: Unauthenticated Remote Shutdown of Spector Mock Server via POST /.admin/stop
GitHub lists this reviewed advisory for @typespec/spector. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
7.5 high
GitHub source severity; exploitability and local consequence require separate evidence.
As of · GitHub Advisory Database
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
@typespec/spector
source listed<= 0.1.0-alpha.26
### Summary `@typespec/spector` registers a `POST /.admin/stop` HTTP route with no authentication, authorization token, Origin check, or IP-source restriction. Any network-reachable client can send a single unauthenticated POST request to terminate the mock server process. Because the server binds to `0.0.0.0` by default (all interfaces), this endpoint is exposed to any host that can reach the server's port—not just localhost—making a complete denial-of-service trivially achievable with one HTTP request. Severity is **High (CVSS 7.5)**. ### Details The vulnerability originates in `packages/spector/src/routes/admin.ts` at line 7, where an Express router registers the shutdown endpoint with no authentication middleware whatsoever: ```ts // packages/spector/src/routes/admin.ts:7-12 router.post(AdminUrls.stop, (_req, res) => { logger.info("Received signal to stop server. Exiting..."); res.status(202).end(); setTimeout(() => { process.exit(0); }); }); ``` The constant `AdminUrls.stop` resolves to `/.admin/stop` (`packages/spector/src/constants.ts:1-3`). The complete attack-reachable call chain is: 1. **`packages/spector/src/cli/cli.ts:139-166`** — `tsp-spector serve <
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
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- GHSA-7q9c-hpx7-9cwm ↗
GitHub Advisory Database · vendor advisory
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Public revision history
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- Revision 1 ·
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