## Summary
Fixes a concurrent map access vulnerability in the OIDC handler that
could cause remote unauthenticated DoS.
## Changes
- Removed OIDC authorization flow endpoints ( and )
- Removed the unsynchronized map that caused the data race
- Kept only the OIDC token exchange endpoint ()
- Simplified by removing OAuth2 flow dependencies
The map was being accessed concurrently by the start (write) and
callback (read/delete) endpoints without synchronization, causing
runtime panics. Since the token exchange flow doesn't require session
state, removing the authorization flow eliminates the vulnerability
entirely.
<!-- Provide a brief summary of your changes -->
## Motivation and Context
<!-- Why is this change needed? What problem does it solve? -->
The following PR eliminates duplicate struct definitions by migrating
the publisher tool to use canonical types from pkg/model, creating a
single source of truth across the codebase. The publisher tool
previously had its own copies of structs that were duplicated, ie.
ServerJSON, Package, Repository, VersionDetail, EnvironmentVariable,
RuntimeArgument and a few others which was not optimal
**Changes in the PR:**
- Refactored the structs to single canonical types located at pkg/model
- Refactor the implementation to use/build canonical structures directly
- Remove all duplicate definitions (5 structs eliminated)
- Publisher now uses model.ServerJSON, model.Package, model.Repository,
etc.
- Renamed some of the structs to better reflect their use case, i.e.
ServerJSON instead of ServerDetail
- Fixes an issue where the Remote property was missing from the previous
publisher copy of the Server
**Benefits:**
- Single source of truth - Schema changes in one place
- Type safety - Compiler catches mismatches
- Enhanced validation - Field constraints and bson tags
- Zero breaking changes - Same CLI interface and JSON output
- Future-proof - New canonical fields automatically available
Supersedes: #217 and #240
## How Has This Been Tested?
<!-- Have you tested this in a real application? Which scenarios were
tested? -->
Locally
## Breaking Changes
<!-- Will users need to update their code or configurations? -->
No
## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update
## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [ ] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [ ] My code follows the repository's style guidelines
- [ ] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed
## Additional context
<!-- Add any other context, implementation notes, or design decisions
-->
---------
Signed-off-by: Radoslav Dimitrov <radoslav@stacklok.com>
## Summary
This PR implements OIDC authentication support for admin users,
specifically configured for Google Cloud Identity. The implementation
includes:
- Configurable OIDC authentication endpoints and validation
- Google Cloud Identity integration for admin access
- JWT token validation and user session management
- Deployment configuration updates for OIDC provider settings
Fixes#283
Add HTTP-based authentication to prove domain ownership, similar to
https://github.com/modelcontextprotocol/registry/pull/238's DNS
authentication but using HTTPS well-known URIs instead of DNS TXT
records.
Fixes#280
## Motivation and Context
Some organizations don't have easy access to DNS records, but can easily
deploy web assets. They would therefore prefer to be able to complete a
HTTP challenge rather than a DNS one to authenticate to the registry.
This would in some way mirror ACME challenges: where you can do a DNS-01
or a HTTP-01 challenge.
## How Has This Been Tested?
- Tested locally by stubbing out the HTTP getter
- Added unit tests
## Breaking Changes
None
## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update
## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [x] I have added appropriate error handling
- [x] I have added or updated documentation as needed
## Additional context
I concern I had when building this that it might expose us to SSRF
attacks.
I think on reflection this is not a significant problem:
- We only GET a fixed file `.well-known/mcp-registry-auth` (redirects
disallowed) after sanitizing the domain, and then also don't expose the
response to the user. This means the user shouldn't be able to hit
anything very interesting.
- The information they might get is what domains/servers exist in the
network. Our infrastructure is already all open-source, so attackers
aren't getting any additional real info by prodding at the environment
this way.
Fixes#270Closes#233
Adds support for DNS-based authentication for proving ownership of a
particular domain. E.g. if you can add a TXT record to `anthropic.com`,
you can publish anything at `com.anthropic/*` or `com.anthropic.*`.
Notes:
- Uses Ed25519 signatures with 15-second timestamp windows to prevent
replay attacks
- Supports multiple public keys in DNS TXT records for key rotation
scenarios
- Publisher CLI supports DNS auth via --dns-domain and --dns-private-key
flags
- Includes key generation commands in publisher README for easy setup
## Motivation and Context
This implements DNS-based public/private key authentication to allow
people to actually publish at their own domains. Currently,
authentication requires GitHub accounts which limits publishing to the
io.github.* namespace.
DNS-based auth enables:
- Publishing under your actual domain (e.g., com.anthropic/* for
anthropic.com)
- Independence from GitHub or other external auth providers
- Organizations managing their own keys and access to publishing
## How Has This Been Tested?
- Unit tests cover signature verification, DNS TXT parsing, timestamp
validation, and error cases
- Tested locally by editing my own DNS records
- All existing auth methods covered by passing tests
## Breaking Changes
None
## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update
## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [x] I have added appropriate error handling
- [x] I have added or updated documentation as needed
## Additional context
Will be adding HTTP challenge auth in a similar way as a separate PR,
e.g. for verifying you own `github.com` by hosting a
`github.com/.well-known/mcp-server-challenge` or similar. Just
mentioning this as we discussed HTTP challenges as closely related to
DNS challenges elsewhere, and want to reassure reviewer that this hasn't
been forgotten with this approach. :) Update: tracking the HTTP auth in
https://github.com/modelcontextprotocol/registry/issues/280
Adds support for auth'ing to the registry via [GitHub Actions
OIDC](https://docs.github.com/en/actions/concepts/security/openid-connect).
Fixes#271
## Motivation and Context
People will probably want to publish to the registry from CI
environments. DNS auth can work here fine
(https://github.com/modelcontextprotocol/registry/issues/270). But for
people who haven't set up DNS, the standard GitHub device flow won't
really work here. We could make this nice by supporting GitHub Actions
OIDC.
## How Has This Been Tested?
Tested locally with a real GitHub OIDC token from a personal repo.
## Breaking Changes
None
## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update
## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [x] I have added appropriate error handling
- [x] I have added or updated documentation as needed
## Motivation and Context
- Adds credentials for the new MCP Registry Login GitHub Apps (local,
staging, prod)
- Adds support for "none" auth to publisher
## How Has This Been Tested?
- Tested publisher workflows locally
- Unit and integration tests passing
## Breaking Changes
None
## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update
## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [x] I have added appropriate error handling
- [x] I have added or updated documentation as needed
---
Merging based on Tadas's approval review, and only making minor docs changes on top of that.
Fixes#264. Adds endpoints:
```
/v0/auth/github # exchange a github token for a registry token that gives you access to namespaces io.github.username and io.github.org for your orgs
/v0/auth/none # get a registry token for namespace io.modelcontextprotocol.anonymous (only for testing/local dev purposes)
```
Updates `/v0/publish` to accept one of these registry tokens.
## Motivation and Context
See #264
## How Has This Been Tested?
- Running locally and getting a token from `/v0/auth/none` and then
publishing to `/v0/publish`
- Updating the integration tests that get a token and then publish, and
them passing
## Breaking Changes
This is a breaking change to the auth API. This is fine for registry
given it's not deployed yet.
## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [x] Breaking change (fix or feature that would cause existing
functionality to change)
- [x] Documentation update
## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [x] I have added appropriate error handling
- [x] I have added or updated documentation as needed
## Additional context
<!-- Add any other context, implementation notes, or design decisions
-->
---------
Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com>
Co-authored-by: adam jones <domdomegg@users.noreply.github.com>
