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Bump com.maxmind.db:maxmind-db from 4.1.0 to 4.2.0 - #792

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dependabot/maven/com.maxmind.db-maxmind-db-4.2.0
Sep 22, 2026
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horgh merged 1 commit into
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dependabot/maven/com.maxmind.db-maxmind-db-4.2.0

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Bumps com.maxmind.db:maxmind-db from 4.1.0 to 4.2.0.

Release notes

Sourced from com.maxmind.db:maxmind-db's releases.

4.2.0

  • Fixed decoding of data pointers with offsets of 2 GiB or greater. Records beyond that boundary could previously fail with IllegalArgumentException.
  • Fixed skipping unknown four-byte pointers during typed decoding. Skipped values that extend past the database are now rejected.
  • Fixed UTF-8 decoding across buffer chunks. Malformed decoded strings and truncated values now throw InvalidDatabaseException.
  • Added decoder limits to prevent excessive CPU and memory use from crafted databases: 65,536 decoded or skipped values, 128 nested containers, and 2 MiB of encoded string and bytes payload per operation. Exceeding a limit throws InvalidDatabaseException. See https://github.com/maxmind/MaxMind-DB-Reader-java/blob/HEAD/UPGRADING.md for accounting, decoded-value validation, and collection capacity-hint changes.
  • Improved decoder performance and reduced per-lookup allocation, including UTF-8 string decoding.
Changelog

Sourced from com.maxmind.db:maxmind-db's changelog.

4.2.0 (2026-09-10)

  • Fixed decoding of data pointers with offsets of 2 GiB or greater. Records beyond that boundary could previously fail with IllegalArgumentException.
  • Fixed skipping unknown four-byte pointers during typed decoding. Skipped values that extend past the database are now rejected.
  • Fixed UTF-8 decoding across buffer chunks. Malformed decoded strings and truncated values now throw InvalidDatabaseException.
  • Added decoder limits to prevent excessive CPU and memory use from crafted databases: 65,536 decoded or skipped values, 128 nested containers, and 2 MiB of encoded string and bytes payload per operation. Exceeding a limit throws InvalidDatabaseException. See https://github.com/maxmind/MaxMind-DB-Reader-java/blob/main/UPGRADING.md for accounting, decoded-value validation, and collection capacity-hint changes.
  • Improved decoder performance and reduced per-lookup allocation, including UTF-8 string decoding.
Commits
  • 6af91cf Preparing for 4.2.0
  • 9ebddfd Set release date
  • cf2ee83 Merge pull request #442 from maxmind/greg/stf-1488
  • a326219 Consolidate release notes and document skipped-field behavior
  • e0fa785 Clarify decoder accounting and cache contracts
  • 715e999 Identify payload boundary assertions by cache and attempt
  • 0731430 Describe file bounds accurately in decoder errors
  • a0ed65e Remove redundant decoder cost accessors and size casts
  • 553be73 Test payload boundaries with concurrent shared-cache lookups
  • f314068 Cover payload and skipped-depth boundaries across cache states
  • Additional commits viewable in compare view

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Bumps [com.maxmind.db:maxmind-db](https://github.com/maxmind/MaxMind-DB-Reader-java) from 4.1.0 to 4.2.0.
- [Release notes](https://github.com/maxmind/MaxMind-DB-Reader-java/releases)
- [Changelog](https://github.com/maxmind/MaxMind-DB-Reader-java/blob/main/CHANGELOG.md)
- [Commits](maxmind/MaxMind-DB-Reader-java@v4.1.0...v4.2.0)

---
updated-dependencies:
- dependency-name: com.maxmind.db:maxmind-db
  dependency-version: 4.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file java Pull requests that update Java code labels Sep 21, 2026
@horgh
horgh merged commit 532b79e into main Sep 22, 2026
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@horgh
horgh deleted the dependabot/maven/com.maxmind.db-maxmind-db-4.2.0 branch September 22, 2026 18:25
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