Sourced from qs's changelog.

6.14.2

• [Fix] parse: mark overflow objects for indexed notation exceeding arrayLimit (#546)
• [Fix] arrayLimit means max count, not max index, in combine/merge/parseArrayValue
• [Fix] parse: throw on arrayLimit exceeded with indexed notation when throwOnLimitExceeded is true (#529)
• [Fix] parse: enforce arrayLimit on comma-parsed values
• [Fix] parse: fix error message to reflect arrayLimit as max index; remove extraneous comments (#545)
• [Robustness] avoid .push, use void
• [readme] document that addQueryPrefix does not add ? to empty output (#418)
• [readme] clarify parseArrays and arrayLimit documentation (#543)
• [readme] replace runkit CI badge with shields.io check-runs badge
• [meta] fix changelog typo (arrayLength → arrayLimit)
• [actions] fix rebase workflow permissions

6.14.1

• [Fix] ensure arrayLimit applies to [] notation as well
• [Fix] parse: when a custom decoder returns null for a key, ignore that key
• [Refactor] parse: extract key segment splitting helper
• [meta] add threat model
• [actions] add workflow permissions
• [Tests] stringify: increase coverage
• [Dev Deps] update eslint, @ljharb/eslint-config, npmignore, es-value-fixtures, for-each, object-inspect

6.14.0

• [New] parse: add throwOnParameterLimitExceeded option (#517)
• [Refactor] parse: use utils.combine more
• [patch] parse: add explicit throwOnLimitExceeded default
• [actions] use shared action; re-add finishers
• [meta] Fix changelog formatting bug
• [Deps] update side-channel
• [Dev Deps] update es-value-fixtures, has-bigints, has-proto, has-symbols
• [Tests] increase coverage

6.13.1

• [Fix] stringify: avoid a crash when a filter key is null
• [Fix] utils.merge: functions should not be stringified into keys
• [Fix] parse: avoid a crash with interpretNumericEntities: true, comma: true, and iso charset
• [Fix] stringify: ensure a non-string filter does not crash
• [Refactor] use __proto__ syntax instead of Object.create for null objects
• [Refactor] misc cleanup
• [Tests] utils.merge: add some coverage
• [Tests] fix a test case
• [actions] split out node 10-20, and 20+
• [Dev Deps] update es-value-fixtures, mock-property, object-inspect, tape

6.13.0

• [New] parse: add strictDepth option (#511)
• [Tests] use npm audit instead of aud

6.12.3

• [Fix] parse: properly account for strictNullHandling when allowEmptyArrays

... (truncated)

• bdcf0c7 v6.14.2
• 294db90 [readme] document that addQueryPrefix does not add ? to empty output
• 5c308e5 [readme] clarify parseArrays and arrayLimit documentation
• 6addf8c [Fix] parse: mark overflow objects for indexed notation exceeding arrayLimit
• cfc108f [Fix] arrayLimit means max count, not max index, in combine/merge/`pars...
• febb644 [Fix] parse: throw on arrayLimit exceeded with indexed notation when `thr...
• f6a7abf [Fix] parse: enforce arrayLimit on comma-parsed values
• fbc5206 [Fix] parse: fix error message to reflect arrayLimit as max index; remove e...
• 1b9a8b4 [actions] fix rebase workflow permissions
• 2a35775 [meta] fix changelog typo (arrayLength → arrayLimit)
• Additional commits viewable in compare view

Sourced from express's releases.

v4.22.1

What's Changed

[!IMPORTANT]
The prior release (4.22.0) included an erroneous breaking change related to the extended query parser. There is no actual security vulnerability associated with this behavior (CVE-2024-51999 has been rejected). The change has been fully reverted in this release.

• Release: 4.22.1 by @​UlisesGascon in expressjs/express#6934

Full Changelog: expressjs/express@4.22.0...v4.22.1

4.22.0

Important: Security

• Security fix for CVE-2024-51999 (GHSA-pj86-cfqh-vqx6)

What's Changed

• Refactor: improve readability by @​sazk07 in expressjs/express#6190
• ci: add support for [email protected] by @​UlisesGascon in expressjs/express#6080
• Method functions with no path should error by @​wesleytodd in expressjs/express#5957
• ci: updated github actions ci workflow by @​Phillip9587 in expressjs/express#6323
• ci: reorder npm i steps to fix ci for older node versions by @​Phillip9587 in expressjs/express#6336
• Backport: ci: add node.js 24 to test matrix by @​Phillip9587 in expressjs/express#6506
• chore(4.x): wider range for query test skip by @​jonchurch in expressjs/express#6513
• use tilde notation for certain dependencies by @​UlisesGascon in expressjs/express#6905
• deps: [email protected] by @​UlisesGascon in expressjs/express#6909
• deps: use tilde notation for qs by @​Phillip9587 in expressjs/express#6919
• Release: 4.22.0 by @​UlisesGascon in expressjs/express#6921

Full Changelog: expressjs/express@4.21.2...4.22.0

4.21.2

What's Changed

• Add funding field (v4) by @​bjohansebas in expressjs/express#6065
• deps: [email protected] by @​blakeembrey in expressjs/express#5956
• deps: bump [email protected] by @​jonchurch in expressjs/express#6209
• Release: 4.21.2 by @​UlisesGascon in expressjs/express#6094

Full Changelog: expressjs/express@4.21.1...4.21.2

4.21.1

What's Changed

• Backport a fix for CVE-2024-47764 to the 4.x branch by @​joshbuker in expressjs/express#6029
• Release: 4.21.1 by @​UlisesGascon in expressjs/express#6031

Full Changelog: expressjs/express@4.21.0...4.21.1

... (truncated)

Sourced from express's changelog.

4.22.1 / 2025-12-01

• Revert security fix for CVE-2024-51999 (GHSA-pj86-cfqh-vqx6)

4.22.0 / 2025-12-01

• Security fix for CVE-2024-51999 (GHSA-pj86-cfqh-vqx6)
• deps: use tilde notation for dependencies
• deps: [email protected]

4.21.2 / 2024-11-06

• deps: [email protected]
  • Fix backtracking protection
• deps: [email protected]
  • Throws an error on invalid path values

4.21.1 / 2024-10-08

• Backported a fix for CVE-2024-47764

4.21.0 / 2024-09-11

• Deprecate res.location("back") and res.redirect("back") magic string
• deps: [email protected]
  • includes [email protected]
• deps: [email protected]
• deps: [email protected]

4.20.0 / 2024-09-10

• deps: [email protected]
  • Remove link renderization in html while redirecting
• deps: [email protected]
  • Remove link renderization in html while redirecting
• deps: [email protected]
  • add depth option to customize the depth level in the parser
  • IMPORTANT: The default depth level for parsing URL-encoded data is now 32 (previously was Infinity)
• Remove link renderization in html while using res.redirect
• deps: [email protected]
  • Adds support for named matching groups in the routes using a regex
  • Adds backtracking protection to parameters without regexes defined
• deps: encodeurl@~2.0.0
  • Removes encoding of \, |, and ^ to align better with URL spec
• Deprecate passing options.maxAge and options.expires to res.clearCookie

... (truncated)

• 12fae14 4.22.1
• 5ddf311 Revert "sec: security patch for CVE-2024-51999"
• 49744ab 4.22.0 (#6921)
• 6e97452 sec: security patch for CVE-2024-51999
• 6a23d34 deps: use tilde notation for qs (#6919)
• 8c12cdf deps: [email protected] (#6909)
• 7fea74f deps: use tilde notation for certain dependencies (#6905)
• dac7a04 chore: wider range for query test skip (#6513)
• 997919b ci: add node.js 24 to test matrix (#6506)
• 36fb59c fix(ci): reorder npm i steps to fix ci for older node versions (#6336)
• Additional commits viewable in compare view

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