release notes for Ditto 3.4.5 and Ditto 3.5.6

Signed-off-by: Thomas Jäckle <[email protected]>

documentation/src/main/resources/pages/ditto/release_notes_345.md

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+---
+title: Release notes 3.4.5
+tags: [release_notes]
+published: true
+keywords: release notes, announcements, changelog
+summary: "Version 3.4.5 of Eclipse Ditto, released on 17.05.2024"
+permalink: release_notes_345.html
+---
+
+This is a security bugfix release, no new features since [3.4.4](release_notes_344.html) were added.
+
+## Changelog
+
+Compared to the latest release [3.4.4](release_notes_344.html), the following changes and bugfixes were added.
+
+### Security fixes
+
+
+#### Security fix for CVE-2024-5165
+
+The Eclipse Ditto's Web-UI, the [Explorer User Interface](https://eclipse.dev/ditto/user-interface.html), was vulnerable 
+to Cross-Site Scripting (XSS) at multiple input fields.  
+Affected versions are all Ditto-UI versions starting from when the Ditto-UI was introduced, with Ditto 
+[3.0.0](release_notes_300.html#new-ditto-explorer-ui).
+
+This is tracked through CVE [https://nvd.nist.gov/vuln/detail/CVE-2024-5165](CVE-2024-5165).
+
+The issue was detected and reported by [Manuel Sommer](https://gitlab.eclipse.org/manuelsommer) and 
+[Quirin Zießler](https://gitlab.eclipse.org/quirinziessler) and disclosed via the 
+[Eclipse Vulnerability Reporting](https://www.eclipse.org/security/) process.  
+We like to thank them for the detection and the effort of reporting the affected input fields.
+
+For any users of Eclipse Ditto who deployed also the Ditto Web-UI, we recommend updating the Web-UI.  
+If the Web-UI is not deployed, no action to update is needed, as the **Ditto backend is not affected**.

documentation/src/main/resources/pages/ditto/release_notes_356.md

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+---
+title: Release notes 3.5.6
+tags: [release_notes]
+published: true
+keywords: release notes, announcements, changelog
+summary: "Version 3.5.6 of Eclipse Ditto, released on 17.05.2024"
+permalink: release_notes_356.html
+---
+
+This is a security bugfix release, no new features since [3.5.5](release_notes_355.html) were added.
+
+## Changelog
+
+Compared to the latest release [3.5.5](release_notes_355.html), the following changes and bugfixes were added.
+
+### Security fixes
+
+
+#### Security fix for CVE-2024-5165
+
+The Eclipse Ditto's Web-UI, the [Explorer User Interface](https://eclipse.dev/ditto/user-interface.html), was vulnerable 
+to Cross-Site Scripting (XSS) at multiple input fields.  
+Affected versions are all Ditto-UI versions starting from when the Ditto-UI was introduced, with Ditto 
+[3.0.0](release_notes_300.html#new-ditto-explorer-ui).
+
+This is tracked through CVE [https://nvd.nist.gov/vuln/detail/CVE-2024-5165](CVE-2024-5165).
+
+The issue was detected and reported by [Manuel Sommer](https://gitlab.eclipse.org/manuelsommer) and 
+[Quirin Zießler](https://gitlab.eclipse.org/quirinziessler) and disclosed via the 
+[Eclipse Vulnerability Reporting](https://www.eclipse.org/security/) process.  
+We like to thank them for the detection and the effort of reporting the affected input fields.
+
+For any users of Eclipse Ditto who deployed also the Ditto Web-UI, we recommend updating the Web-UI.  
+If the Web-UI is not deployed, no action to update is needed, as the **Ditto backend is not affected**.