SWI-3723 [Snyk] Security upgrade com.squareup.retrofit2:retrofit from 2.11.0 to 3.0.0

[bwappsec]

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/retrofit2-play26/pom.xml

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This major version upgrade introduces significant changes, primarily by upgrading its core dependency to OkHttp 4.x and adding a transitive dependency on Kotlin. [4, 5]

While binary compatibility with version 2.x is maintained, the recommended usage pattern has shifted to favor native Kotlin coroutines. [5, 7]

Highlights:

• API Changes: Developers are encouraged to refactor API interfaces from returning Call<T> to using suspend fun which returns the type directly. [2]
• Error Handling: Suspend functions now throw HttpException directly for non-2xx responses, requiring changes to error handling logic. [2]
• Requirements: Retrofit 3.0 requires Java 8+ or Android API 21+. [6]

Source: Release notes
Recommendation: While existing code may not break immediately, a dedicated effort is needed to refactor to the new coroutine-based API to leverage the benefits of this version. Verify compatibility with the new transitive Kotlin and OkHttp 4.x dependencies.

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
	Improper Certificate Validation SNYK-JAVA-COMSQUAREUPOKHTTP3-13961111	125	com.squareup.retrofit2:retrofit: 2.11.0 -> 3.0.0 Major version upgrade No Path Found No Known Exploit

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[bwappsec]

✅ 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
✅	Code Security	0	0	0	0	0 issues

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