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Update MessagePack to 2.5.303 - #69369

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wtgodbe merged 1 commit into
release/9.0from
BrennanConroy-patch-5
Sep 21, 2026
Merged

wtgodbe merged 1 commit into
release/9.0from
BrennanConroy-patch-5

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@BrennanConroy

@BrennanConroy BrennanConroy commented Sep 17, 2026 •

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Update MessagePack to 2.5.303

Description

Update MessagePack to the latest version. The previous version has an advisory so we should make sure our transitive reference is on the latest (fixed) version.

Customer Impact

Don't need to update a transitive reference due to vulnerability warnings.

Regression?

  • Yes
  • No

Risk

  • High
  • Medium
  • Low

3rd party package reference update to fix a vulnerability. No code changes on our side.

Verification

  • Manual (required)
  • Automated

Packaging changes reviewed?

  • Yes
  • No
  • N/A

Copilot AI lite review requested due to automatic review settings September 17, 2026 22:50

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Copilot review overview

🟡 Changes recommended

The PR description is still "TODO" and should be updated to document the motivation and relevant upstream release notes for the dependency bump.

Get a fresh assessment by requesting another Copilot review.

Review effort: Lite
Findings: 1 Low severity

Open (1)
What changed in this PR

Updates the centrally-managed MessagePack dependency version used across the repo via eng/Versions.props.

Changes:

  • Bump MessagePackVersion from 2.5.302 to 2.5.303.
File Description
eng/​Versions.props Updates the centrally-defined MessagePackVersion property to 2.5.303.

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Comment thread eng/Versions.props
<GrpcNetClientVersion>2.64.0</GrpcNetClientVersion>
<GrpcToolsVersion>2.64.0</GrpcToolsVersion>
<MessagePackVersion>2.5.302</MessagePackVersion>
<MessagePackVersion>2.5.303</MessagePackVersion>
@dotnet-policy-service

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Hi @BrennanConroy. This PR was just approved to be included in the upcoming servicing release. Somebody from the @dotnet/aspnet-build team will get it merged when the branches are open. Until then, please make sure all the CI checks pass and the PR is reviewed.

@wtgodbe
wtgodbe merged commit a0f453f into release/9.0 Sep 21, 2026
24 of 28 checks passed
@wtgodbe
wtgodbe deleted the BrennanConroy-patch-5 branch September 21, 2026 18:58
This was referenced Oct 13, 2026
github-actions Bot pushed a commit to dlresende/extreme-carpaccio that referenced this pull request Nov 1, 2026
)

Updated
[Microsoft.AspNetCore.Mvc.Testing](https://github.com/dotnet/aspnetcore)
from 9.0.20 to 9.0.22.

<details>
<summary>Release notes</summary>

_Sourced from [Microsoft.AspNetCore.Mvc.Testing's
releases](https://github.com/dotnet/aspnetcore/releases)._

## 9.0.21

[Release](https://github.com/dotnet/core/releases/tag/v9.0.21)

## What's Changed
* [release/9.0] Update branding to 9.0.21 by @​vseanreesermsft in
dotnet/aspnetcore#68962
* [release/9.0] Update dependencies from dotnet/source-build-assets by
@​dotnet-maestro[bot] in dotnet/aspnetcore#68967
* [release/9.0] (deps): Bump src/submodules/googletest from `3940de9` to
`36ba75f` by @​dependabot[bot] in
dotnet/aspnetcore#68919
* [release/9.0] Update OpenApi to 1.6.31 by @​Youssef1313 in
dotnet/aspnetcore#68837
* [release/9.0] Extract IsAuthenticated helper method by @​Youssef1313
with @​Copilot in dotnet/aspnetcore#68659
* [release/9.0] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/aspnetcore#68570
* [release/9.0] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/aspnetcore#69085
* [release/9.0] Fix h3 connection-level and stream-level abort locking
by @​BrennanConroy in dotnet/aspnetcore#69151
* Merging internal commits for release/9.0 by @​dotnet-bot in
dotnet/aspnetcore#69179
* [release/9.0] [SignalR] [Java] Fix hang when reading an HTTP response
body fails by @​github-actions[bot] in
dotnet/aspnetcore#69208
* [release/9.0] Fix: hardening http2 to refuse newline chars on trailers
and dynamic HPACK table by @​BrennanConroy in
dotnet/aspnetcore#69249
* [release/9.0] Scope sections E2E assertions to mounted app by
@​wtgodbe in dotnet/aspnetcore#69252
* [release/9.0] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/aspnetcore#69268
* Update MessagePack to 2.5.303 by @​BrennanConroy in
dotnet/aspnetcore#69369


**Full Changelog**:
dotnet/aspnetcore@v9.0.20...v9.0.21

Commits viewable in [compare
view](https://github.com/dotnet/aspnetcore/commits).
</details>

[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=Microsoft.AspNetCore.Mvc.Testing&package-manager=nuget&previous-version=9.0.20&new-version=9.0.22)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't
alter it yourself. You can also trigger a rebase manually by commenting
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</details>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
github-actions Bot pushed a commit to dlresende/extreme-carpaccio that referenced this pull request Nov 1, 2026
)

Updated
[Microsoft.AspNetCore.Mvc.Testing](https://github.com/dotnet/aspnetcore)
from 9.0.20 to 9.0.22.

<details>
<summary>Release notes</summary>

_Sourced from [Microsoft.AspNetCore.Mvc.Testing's
releases](https://github.com/dotnet/aspnetcore/releases)._

## 9.0.21

[Release](https://github.com/dotnet/core/releases/tag/v9.0.21)

## What's Changed
* [release/9.0] Update branding to 9.0.21 by @​vseanreesermsft in
dotnet/aspnetcore#68962
* [release/9.0] Update dependencies from dotnet/source-build-assets by
@​dotnet-maestro[bot] in dotnet/aspnetcore#68967
* [release/9.0] (deps): Bump src/submodules/googletest from `3940de9` to
`36ba75f` by @​dependabot[bot] in
dotnet/aspnetcore#68919
* [release/9.0] Update OpenApi to 1.6.31 by @​Youssef1313 in
dotnet/aspnetcore#68837
* [release/9.0] Extract IsAuthenticated helper method by @​Youssef1313
with @​Copilot in dotnet/aspnetcore#68659
* [release/9.0] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/aspnetcore#68570
* [release/9.0] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/aspnetcore#69085
* [release/9.0] Fix h3 connection-level and stream-level abort locking
by @​BrennanConroy in dotnet/aspnetcore#69151
* Merging internal commits for release/9.0 by @​dotnet-bot in
dotnet/aspnetcore#69179
* [release/9.0] [SignalR] [Java] Fix hang when reading an HTTP response
body fails by @​github-actions[bot] in
dotnet/aspnetcore#69208
* [release/9.0] Fix: hardening http2 to refuse newline chars on trailers
and dynamic HPACK table by @​BrennanConroy in
dotnet/aspnetcore#69249
* [release/9.0] Scope sections E2E assertions to mounted app by
@​wtgodbe in dotnet/aspnetcore#69252
* [release/9.0] Update dependencies from dotnet/arcade by
@​dotnet-maestro[bot] in dotnet/aspnetcore#69268
* Update MessagePack to 2.5.303 by @​BrennanConroy in
dotnet/aspnetcore#69369


**Full Changelog**:
dotnet/aspnetcore@v9.0.20...v9.0.21

Commits viewable in [compare
view](https://github.com/dotnet/aspnetcore/commits).
</details>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
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