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wire 2026-06-27
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SPRING FRAMEWORK FIXES MIME TYPE PARSER REGRESSION, AMQP CLOSES LOGBACK VULNERABILITY WINDOW

By RepoJournal · Filed · About Spring · Composed from the cited sources · methodology

dependabot[bot] ilayaperumalg
2 people shipped this
dependabot[bot] @dependabot[bot] 2 cited ilayaperumalg @ilayaperumalg 1 cited

Spring Framework patched a critical off-by-one error in MimeTypeUtils that was throwing the wrong exception on malformed input, while Spring AMQP moved aggressively to lock down conditional configuration processing in Logback.

Spring Framework addressed a regression introduced in recent changes to MimeTypeUtils.parseMimeType() [1] that exposed a StringIndexOutOfBoundsException instead of the expected InvalidMimeTypeException when parsing certain invalid MIME types, particularly quoted strings without semicolons. The fix is surgical: replacing the bounds check with a proper index validation to prevent array access violations. In parallel, Spring AMQP bumped Logback to 1.5.37 [2], which hardens conditional configuration processing and closes multiple vulnerability vectors related to unsafe Java expression evaluation in config files. Spring Session updated its CI infrastructure to actions/cache v6 [3], migrating to ESM and picking up performance improvements for workflow caching. Spring AI completed a workflow infrastructure refactor for its integration test suite [4], consolidating test execution paths. Spring Framework also merged maintenance branch updates [5][6] to keep version lines in sync.

Action items

References

  1. [1] Fix off-by-one error in MimeTypeUtils.parseMimeType() ↗ spring-projects/spring-framework
  2. [2] Bump ch.qos.logback:logback-classic from 1.5.35 to 1.5.37 ↗ spring-projects/spring-amqp
  3. [3] Bump actions/cache from 5 to 6 ↗ spring-projects/spring-session
  4. [4] Move Spring AI integration tests' workflow ↗ spring-projects/spring-ai
  5. [5] Merge branch '7.0.x' ↗ spring-projects/spring-framework
  6. [6] Merge branch '7.0.x' ↗ spring-projects/spring-framework

$ ls spring-projects/reviews/ # the step-back reads

the week in review Spring Kafka fixes multi-value JSON header loss the month in review Spring standardizes release trains while security patches and batch fixes surface
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Quick answers

What shipped in Spring on June 27, 2026?
Spring Framework patched a critical off-by-one error in MimeTypeUtils that was throwing the wrong exception on malformed input, while Spring AMQP moved aggressively to lock down conditional configuration processing in Logback. In total, 5 commits and 3 pull requests landed.
Who contributed to Spring on June 27, 2026?
2 developers shipped this update, including dependabot[bot] and ilayaperumalg.
What were the notable Spring updates?
Fix off-by-one error in MimeTypeUtils.parseMimeType(), Bump ch.qos.logback:logback-classic from 1.5.35 to 1.5.37, and Bump actions/cache from 5 to 6.
♥

$ log @spring-projects --recent

Kubernetes probe groups keep their defaults; multi-segment health paths land 90 shipped Kafka config building centralized, async listener results awaited on stop 52 shipped Spring Data moves to JSqlParser 5.4 and Hibernate 7.4.8.Final 11 shipped Spring Batch deprecates setters for required dependencies 5 shipped

$ log --all # elsewhere on the wire

Agent Security Quiet day in agent security as guard coverage reaches four clients Alignment & Post-training verl defaults Ascend RL mode, open-instruct unblocks SFT packing

$ ls showcases/

Safety Evals AI Red Teaming Agent Security Interpretability Alignment & Post-training

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