Update dependency @modelcontextprotocol/sdk to v1.24.0 [SECURITY] #749

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renovate wants to merge 1 commit into master from renovate/npm-modelcontextprotocol-sdk-vulnerability

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renovate bot commented Dec 2, 2025 •

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This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@modelcontextprotocol/sdk (source)	`1.17.3` → `1.24.0`

GitHub Vulnerability Alerts

CVE-2025-66414

The Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPServerTransport or SSEServerTransport and has not enabled enableDnsRebindingProtection, a malicious website could exploit DNS rebinding to bypass same-origin policy restrictions and send requests to the local MCP server. This could allow an attacker to invoke tools or access resources exposed by the MCP server on behalf of the user in those limited circumstances.

Note that running HTTP-based MCP servers locally without authentication is not recommended per MCP security best practices. This issue does not affect servers using stdio transport.

Servers created via createMcpExpressApp() now have this protection enabled by default when binding to localhost. Users with custom Express configurations are advised to update to version 1.24.0 and apply the exported hostHeaderValidation() middleware when running an unauthenticated server on localhost.

Release Notes

modelcontextprotocol/typescript-sdk (@modelcontextprotocol/sdk)

`v1.24.0`

Summary

This release brings us up to speed with the latest MCP spec 2025-11-25. Take a look at the latest spec as well as the release blog post.

What's Changed

fix: update spec links from latest to draft by @domdomegg in #1171
Make sure to consume HTTP error response bodies by @GreenStage in #1173
docs: add GET request handling for streamableHttp stateless mode by @saharis9988 in #1161
SEP-1686: Tasks by @LucaButBoring in #1041
Fix JSON parse error on SSE events with empty data by @felixweinberger in #1184
Fix StreamableHTTPClientTransport instantiation by @yuwzho in #944
feat: eslint rule to prefer node protocols by @mattzcarey in #1187
fix: call tasks/result to deliver side-channel messages by @felixweinberger in #1185
Add invalid_target oauth error (rfc 8707) by @GreenStage in #1183
fix(client): use StreamableHTTPError instead of plain Error in send() by @yamadashy in #1178
coerce 'expires_in' to be a number by @adam-kuhn in #1111
Allow HTTP issuer URLs when MCP_DEV_MODE is enabled by @jerome3o-anthropic in #1189
fix: update registerTool signature for proper typed ToolCallback by @mattzcarey in #1188
SEP-1046: Client credentials flow for M2M without user interaction by @KKonstantinov in #1157
adds the transitive @types/express-serve-static-core dependency as a direct devDependency by @mgyarmathy in #1078
Fix optional argument handling in prompts for Zod V4 by @filip-bartuska-ipf in #1199
fix hanging stdio servers by @mattzcarey in #1200
README refactor by @KKonstantinov in #1197
[Docs] Fix typo by @koic in #1067
feat: add closeSSEStream callback to RequestHandlerExtra by @felixweinberger in #1166
fix: improve SSE reconnection behavior by @felixweinberger in #1191
fix: normalize headers in sse transport by @marcrasi in #856
feat: add closeStandaloneSSEStream for GET stream polling by @felixweinberger in #1203
fix: normalize null to undefined in ElicitResultSchema content field by @mattzcarey in #1204
Modify Origin header validation in validateRequestHeaders (streamableHttp.ts and sse.ts) to allow requests without an Origin, as they are not relevant to server DNS rebinding protection. by @jacopoc in #1205
fix: allow zod 4 transformations by @mattzcarey in #1213
feat: backwards-compatible createMessage overloads for SEP-1577 by @felixweinberger in #1212
chore: bump version for release by @felixweinberger in #1215

New Contributors

@GreenStage made their first contribution in #1173
@saharis9988 made their first contribution in #1161
@yuwzho made their first contribution in #944
@yamadashy made their first contribution in #1178
@adam-kuhn made their first contribution in #1111
@mgyarmathy made their first contribution in #1078
@filip-bartuska-ipf made their first contribution in #1199
@koic made their first contribution in #1067
@marcrasi made their first contribution in #856
@jacopoc made their first contribution in #1205

Full Changelog: modelcontextprotocol/typescript-sdk@1.23.0...1.24.0

`v1.23.1`

Fixed:

Disabled SSE priming events to fix backwards compatibility - 1.23.x clients crash on empty SSE data (JSON.parse(""))

This is a patch for servers still on 1.23.x that were breaking clients not handling the the 2025-11-25 priming event behavior with empty SSE data fields. See #1233 for more details.

Full Changelog: modelcontextprotocol/typescript-sdk@1.23.0...1.23.1

`v1.23.0`

What's Changed

Migrate to vitest from jest by @mattzcarey in #1074
ci: add workflow_dispatch trigger for manual CI runs by @felixweinberger in #1114
Fix: @types/node incompatibility with vite warnings on npm install by @KKonstantinov in #1121
Fix: clean up accidental spec.types.ts by @KKonstantinov in #1122
fix: Pass RequestInit options to auth requests by @dsp-ant in #1066
SEP-1036: URL Elicitation by @nbarbettini in #1105
add none to test and the router. by @m-henderson in #1116
[auth] Adjust scope management to line up with SEP-835 by @pcarleton in #1133
chore: add .idea/ to .gitignore by @maxisbey in #1134
chore: remove unused @types/eslint__js dependency by @mattzcarey in #1128
feat: url based client metadata registration (SEP 991) by @mattzcarey in #1127
feat: zod v4 with backwards compatibility for v3.25+ by @dclark27 in #1040
fix: remove pnpm lock and regenerate package-lock by @mattzcarey in #1138
docs: update installation instructions for zod peer dependency by @mattzcarey in #1139
Implement SEP-1577 - Sampling With Tools by @ochafik in #1101
Follow up: unify v3 and v4 zod types via describe matrix and a test helper by @KKonstantinov in #1141
chore: Add deprecated marker to old elicitInput overload by @nbarbettini in #1142
fix: Connect error in URL elicitation example by @nbarbettini in #1136
Support upscoping on insufficient_scope 403 by @Nayana-Parameswarappa in #1115
Support beta releases by publishing with --tag beta by @felixweinberger in #1146
Bump version to 1.23.0-beta.0 by @felixweinberger in #1147
SEP-1613: use.catchall() on inputSchema/outputSchema to support JSON Schema 2020-12 by @felixweinberger in #1135
sampling: validate tools, tool_use, tool_result constraints by @ochafik in #1156
fix: React to upstream RC schema changes for form mode elicitation requests by @felixweinberger in #1164
feat: implement SEP-1699 SSE polling via server-side disconnect by @felixweinberger in #1129
chore: bump package number for release by @felixweinberger in #1170

New Contributors

@nbarbettini made their first contribution in #1105
@m-henderson made their first contribution in #1116
@maxisbey made their first contribution in #1134
@dclark27 made their first contribution in #1040
@Nayana-Parameswarappa made their first contribution in #1115

Full Changelog: modelcontextprotocol/typescript-sdk@1.22.0...1.23.0

`v1.22.0`

What's Changed

registerTool: accept ZodType for input and output schema by @ksinder in #816
SEP-1319: Decouple Request Payloads, Remove passthrough iteration, Typecheck fixes by @KKonstantinov in #1086
add pkg-pr-new bot by @pcarleton in #1088
Upgrade to Node LTS by @mattzcarey in #1072
change step name by @pcarleton in #1089
SEP-1034: Default values for Elicitation Schemas by @KKonstantinov in #1096
SEP-1330: Compatibility with SEP-1034 by @KKonstantinov in #1100
Implementation of SEP-986: Specify Format for Tool Names by @kentcdodds in #900
[auth] Fix march spec fallback for metadata discovery by @pcarleton in #1108
chore: bump version for release by @felixweinberger in #1110

New Contributors

@ksinder made their first contribution in #816

Full Changelog: modelcontextprotocol/typescript-sdk@1.21.1...1.22.0

`v1.21.2`

What's changed

This is a patch release for a regression highlighted by #1103

This patch contains only the cherry picked fix in #1108

Full Changelog: modelcontextprotocol/typescript-sdk@1.21.1...1.21.2

`v1.21.1`

What's Changed

Only use path-based discovery URLs from the authorization server to discover metadata by @roadmapper in #1070
Add @deprecated annotations to legacy APIs by @domdomegg in #1018
fix: Support WWW-Authenticate scope param for SEP-835 by @chipgpt in #983
move CLI script to dedicated scripts directory by @mattzcarey in #1073
Check script which typechecks using Typescripts new Go port by @mattzcarey in #1075
FIX: use a nightly spec.types.ts by @mattzcarey in #1087
chore: bump version for release by @felixweinberger in #1085

New Contributors

@roadmapper made their first contribution in #1070

Full Changelog: modelcontextprotocol/typescript-sdk@1.21.0...1.21.1

`v1.21.0`

What's Changed

feat: pluggable JSON schema validator providers by @mattzcarey in #1012
Update metadata.ts by @pcarleton in #1010
fix: Prefer the token_endpoint_auth_method response from DCR registration by @chipgpt in #1022
Fix: Non-existent tool, disabled tool and inputSchema validation return MCP protocol level instead of CallToolResult with isError: true by @KKonstantinov in #1044
chore: bump version to 1.21.0 for release by @felixweinberger in #1062

New Contributors

@chipgpt made their first contribution in #1022

Full Changelog: modelcontextprotocol/typescript-sdk@1.20.2...1.21.0

`v1.20.2`

What's Changed

fix: Zod to JSONSchema pipe strategies by @pierreliefauche in #962
chore: bump version for weekly release by @felixweinberger in #1042

New Contributors

@pierreliefauche made their first contribution in #962

Full Changelog: modelcontextprotocol/typescript-sdk@1.20.1...1.20.2

`v1.20.1`

What's Changed

fix: Add Accept header to auth metadata request by @SVLaursen in #901
Allow empty string as valid URL in DCR workflow by @fredericbarthelet in #987
docs: fix summary contents at readme by @starfish719 in #1025
chore: bump version to 1.20.1 for release by @felixweinberger in #1032

New Contributors

@SVLaursen made their first contribution in #901
@starfish719 made their first contribution in #1025

Full Changelog: modelcontextprotocol/typescript-sdk@1.20.0...1.20.1

`v1.20.0`

What's Changed

docs: improve main README with better quick start, include examples of stateless HTTP, explain tools v resources v prompts by @domdomegg in #980
chore: add lint:fix script by @mattzcarey in #1013
Default to S256 code challenge if not specified in authorization server metadata by @LucaButBoring in #992

New Contributors 🙏

@mattzcarey made their first contribution in #1013

Full Changelog: modelcontextprotocol/typescript-sdk@1.19.0...1.20.0

`v1.19.1`

`v1.18.2`

What's Changed

Updates the sampling code example in the README by @viniciuscsouza in #958
Use redirect Uri passed in in demoInMemoryOAuthProvider by @TylerLeonhardt in #931
fix(auth-router): correct Protected Resource Metadata for pathful RS and add explicit resourceServerUrl (RFC 9728) by @blustAI in #858
chore: update version to 1.18.2 for weekly release by @felixweinberger in #970

New Contributors

@viniciuscsouza made their first contribution in #958
@TylerLeonhardt made their first contribution in #931
@blustAI made their first contribution in #858

Full Changelog: modelcontextprotocol/typescript-sdk@1.18.1...1.18.2

`v1.18.1`

What's Changed

fix: prevent streamable http wite after end from crashing the node process by @MQ37 in #933
chore: update version to 1.18.1 for weekly release by @felixweinberger in #950

New Contributors

@MQ37 made their first contribution in #933

Full Changelog: modelcontextprotocol/typescript-sdk@1.18.0...1.18.1

`v1.18.0`

What's Changed

mcp: update SDK for SEP 973 + add to example server by @jesselumarie in #904
feat: add _meta field support to tool definitions by @knguyen-figma in #922
Fix automatic log level handling for sessionless connections by @cliffhall in #917
1.17.6 by @ihrpr in #936
1.18.0 by @ihrpr in #937
ignore icons for now by @ihrpr in #938

New Contributors

@jesselumarie made their first contribution in #904
@knguyen-figma made their first contribution in #922

Full Changelog: modelcontextprotocol/typescript-sdk@1.17.5...1.18.0

`v1.17.5`

What's Changed

Automatic handling of logging level by @cliffhall in #882
Fix the SDK vs Spec types test that is breaking CI by @cliffhall in #908

Full Changelog: modelcontextprotocol/typescript-sdk@1.17.4...1.17.5

`v1.17.4`

What's Changed

feature(middleware): Composable fetch middleware for auth and cross‑cutting concerns by @m-paternostro in #485
restrict url schemes allowed in oauth metadata by @pcarleton in #877
[auth] OAuth protected-resource-metadata: fallback on 4xx not just 404 by @pcarleton in #879
chore: bump version to 1.17.4 by @felixweinberger in #894

Full Changelog: modelcontextprotocol/typescript-sdk@1.17.3...1.17.4

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December 2, 2025 18:56

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renovate bot force-pushed the renovate/npm-modelcontextprotocol-sdk-vulnerability branch 4 times, most recently from ffc70df to 9ccd0a5 Compare

December 9, 2025 16:51

renovate bot force-pushed the renovate/npm-modelcontextprotocol-sdk-vulnerability branch 2 times, most recently from f1c411f to de15a0a Compare

December 15, 2025 13:19


          Update dependency @modelcontextprotocol/sdk to v1.24.0 [SECURITY]

99920ae

renovate bot force-pushed the renovate/npm-modelcontextprotocol-sdk-vulnerability branch from de15a0a to 99920ae Compare

December 31, 2025 14:05

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