[Snyk] Security upgrade io.vertx:vertx-rx-java from 3.4.2 to 4.5.23

[snyk-io]

Snyk has created this PR to fix 1 vulnerabilities in the maven dependencies of this project.

Snyk changed the following file(s):

• samples/client/petstore/java/vertx/pom.xml

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This is a major upgrade from Vert.x 3 to Vert.x 4, which introduces significant breaking changes and requires substantial code refactoring.

Highlights:

• RxJava Version: The vertx-rx-java artifact was for RxJava 1. Vert.x 4 introduces vertx-rx-java2 and vertx-rx-java3. You must migrate your dependency and update all package imports from io.vertx.reactivex.* to io.vertx.rxjava3.* (or rxjava2). [9, 14]
• API Paradigm Shift: Vert.x 4 adopts a Future-first API model over the previous callback-heavy approach. While callbacks are often still available for a smoother transition, many APIs have changed. [1, 3, 15]
• Removed APIs: Numerous methods and classes deprecated in Vert.x 3 have been removed. [1, 3]

Source: Vert.x 3 to 4 Migration Guide
Recommendation: This upgrade cannot be merged without a dedicated migration effort. Developers must follow the official migration guide to update dependencies, package imports, and asynchronous API usage.

Notice 🤖: This content was generated using artificial intelligence. AI-generated content may contain errors and should be reviewed for accuracy before use.

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Vulnerabilities that will be fixed with an upgrade:

	Issue	Score	Upgrade
	CRLF Injection SNYK-JAVA-IONETTY-14423947	69	io.vertx:vertx-rx-java: 3.4.2 -> 4.5.23 Major version upgrade No Path Found No Known Exploit

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[snyk-io]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scanner	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues
✅	Licenses	0	0	0	0	0 issues

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