Skip to content

Bump Umbraco.Cms from 17.3.5 to 17.4.0#248

Open
dependabot[bot] wants to merge 1 commit into
developfrom
dependabot/nuget/Our.Umbraco.GMaps.UmbracoV17/Umbraco.Cms-17.4.0
Open

Bump Umbraco.Cms from 17.3.5 to 17.4.0#248
dependabot[bot] wants to merge 1 commit into
developfrom
dependabot/nuget/Our.Umbraco.GMaps.UmbracoV17/Umbraco.Cms-17.4.0

Conversation

@dependabot
Copy link
Copy Markdown
Contributor

@dependabot dependabot Bot commented on behalf of github May 21, 2026

Updated Umbraco.Cms from 17.3.5 to 17.4.0.

Release notes

Sourced from Umbraco.Cms's releases.

17.4.0

Upgrade Notes

Be aware of a change to behaviour for detecting the Umbraco application URL. Previously, ApplicationMainUrl was automatically set from the Host header of incoming HTTP requests. In environments where Umbraco is not behind a reverse proxy that validates the Host header, this could allow a forged Host header to overwrite the URL used in password reset links, user invitations, and other email notifications. While this is normally mitigated by proper hosting configuration and setting UmbracoApplicationUrl explicitly, we felt that the auto-detection behaviour should be hardened up and become an opt-in rather than the default. You can read more about this under "Breaking Changes" below, the linked PR and the documentation.

There are a few updates related to performance in this release that are worth investigating for larger sites. Using output cache in your projects, with intelligent and customisable detection of page invalidation, is now a configuration option for templated websites, with extension points also applied for the Delivery API. We have optimised content cache rebuild after schema updates, with an option for deferred rebuild in the background. If considering a project with significant expected concurrency for member login and registration, and you prefer to use an external service for member management, the new option for lightweight external members will be worth reviewing.

If working with AI tools such as Umbraco MCP, additions to management API endpoints that expose JSON schema for data types and allow for patch updates of specific properties, should improve accuracy and reliability.

As usual please find the full list of PRs that have contributed to Umbraco 17.4 as follows.

What's Changed Since 17.4.0-rc3

Full Changelog: umbraco/Umbraco-CMS@release-17.4.0-rc3...release-17.4.0

What's Changed Since 17.4.0-r2

📦 Dependencies

🔒 Security

🐛 Bug Fixes

Full Changelog: umbraco/Umbraco-CMS@release-17.4.0-rc2...release-17.4.0-rc3

What's Changed Since 17.4.0-rc

🐛 Bug Fixes

Full Changelog: umbraco/Umbraco-CMS@release-17.4.0-rc...release-17.4.0-rc2

What's Changed Since the Previous Version (17.3.5)

🙌 Notable Changes

17.4.0-rc3

Upgrade Notes

Be aware of a change to behaviour for detecting the Umbraco application URL. Previously, ApplicationMainUrl was automatically set from the Host header of incoming HTTP requests. In environments where Umbraco is not behind a reverse proxy that validates the Host header, this could allow a forged Host header to overwrite the URL used in password reset links, user invitations, and other email notifications. While this is normally mitigated by proper hosting configuration and setting UmbracoApplicationUrl explicitly, we felt that the auto-detection behaviour should be hardened up and become an opt-in rather than the default. You can read more about this under "Breaking Changes" below, the linked PR and the documentation.

There are a few updates related to performance in this release that are worth investigating for larger sites. Using output cache in your projects, with intelligent and customisable detection of page invalidation, is now a configuration option for templated websites, with extension points also applied for the Delivery API. We have optimised content cache rebuild after schema updates, with an option for deferred rebuild in the background. If considering a project with significant expected concurrency for member login and registration, and you prefer to use an external service for member management, the new option for lightweight external members will be worth reviewing.

If working with AI tools such as Umbraco MCP, additions to management API endpoints that expose JSON schema for data types and allow for patch updates of specific properties, should improve accuracy and reliability.

As usual please find the full list of PRs that have contributed to Umbraco 17.4 as follows.

What's Changed Since 17.4.0-r2

📦 Dependencies

🔒 Security

🐛 Bug Fixes

Full Changelog: umbraco/Umbraco-CMS@release-17.4.0-rc2...release-17.4.0-rc3

What's Changed Since 17.4.0-rc

🐛 Bug Fixes

Full Changelog: umbraco/Umbraco-CMS@release-17.4.0-rc...release-17.4.0-rc2

What's Changed Since the Previous Version (17.3.5)

🙌 Notable Changes

... (truncated)

17.4.0-rc2

Upgrade Notes

Be aware of a change to behaviour for detecting the Umbraco application URL. Previously, ApplicationMainUrl was automatically set from the Host header of incoming HTTP requests. In environments where Umbraco is not behind a reverse proxy that validates the Host header, this could allow a forged Host header to overwrite the URL used in password reset links, user invitations, and other email notifications. While this is normally mitigated by proper hosting configuration and setting UmbracoApplicationUrl explicitly, we felt that the auto-detection behaviour should be hardened up and become an opt-in rather than the default. You can read more about this under "Breaking Changes" below, the linked PR and the documentation.

There are a few updates related to performance in this release that are worth investigating for larger sites. Using output cache in your projects, with intelligent and customisable detection of page invalidation, is now a configuration option for templated websites, with extension points also applied for the Delivery API. We have optimised content cache rebuild after schema updates, with an option for deferred rebuild in the background. If considering a project with significant expected concurrency for member login and registration, and you prefer to use an external service for member management, the new option for lightweight external members will be worth reviewing.

If working with AI tools such as Umbraco MCP, additions to management API endpoints that expose JSON schema for data types and allow for patch updates of specific properties, should improve accuracy and reliability.

As usual please find the full list of PRs that have contributed to Umbraco 17.4 as follows.

What's Changed Since 17.4.0-rc

🐛 Bug Fixes

Full Changelog: umbraco/Umbraco-CMS@release-17.4.0-rc...release-17.4.0-rc2

What's Changed Since the Previous Version (17.3.5)

🙌 Notable Changes

💥 Breaking Changes

📦 Dependencies

🚤 Performance

17.4.0-rc

Upgrade Notes

Be aware of a change to behaviour for detecting the Umbraco application URL. Previously, ApplicationMainUrl was automatically set from the Host header of incoming HTTP requests. In environments where Umbraco is not behind a reverse proxy that validates the Host header, this could allow a forged Host header to overwrite the URL used in password reset links, user invitations, and other email notifications. While this is normally mitigated by proper hosting configuration and setting UmbracoApplicationUrl explicitly, we felt that the auto-detection behaviour should be hardened up and become an opt-in rather than the default. You can read more about this under "Breaking Changes" below, the linked PR and the documentation.

There are a few updates related to performance in this release that are worth investigating for larger sites. Using output cache in your projects, with intelligent and customisable detection of page invalidation, is now a configuration option for templated websites, with extension points also applied for the Delivery API. We have optimised content cache rebuild after schema updates, with an option for deferred rebuild in the background. If considering a project with significant expected concurrency for member login and registration, and you prefer to use an external service for member management, the new option for lightweight external members will be worth reviewing.

If working with AI tools such as Umbraco MCP, additions to management API endpoints that expose JSON schema for data types and allow for patch updates of specific properties, should improve accuracy and reliability.

As usual please find the full list of PRs that have contributed to Umbraco 17.4 as follows.

What's Changed

🙌 Notable Changes

💥 Breaking Changes

📦 Dependencies

🚤 Performance

🌈 Accessibility Improvements

Commits viewable in compare view.

Dependabot compatibility score

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 @dependabot rebase.


Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

  • @dependabot rebase will rebase this PR
  • @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
  • @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
  • @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
  • @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
  • @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
    You can disable automated security fix PRs for this repo from the Security Alerts page.

---
updated-dependencies:
- dependency-name: Umbraco.Cms
  dependency-version: 17.4.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file .NET Pull requests that update .NET code labels May 21, 2026
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

dependencies Pull requests that update a dependency file .NET Pull requests that update .NET code

Projects

None yet

Development

Successfully merging this pull request may close these issues.

0 participants