🧹 Updates

• Middleware/basicAuth: Enhance BasicAuth middleware to better comply with RFC 6750 by @gaby in https://github.com/gofiber/fiber/pull/3484
• Middleware/basicAuth: Improve BasicAuth middleware default security by @gaby in https://github.com/gofiber/fiber/pull/3522
• Middleware/cache: Improve cache middleware RFC compliance by @gaby in https://github.com/gofiber/fiber/pull/3488
• Middleware/cors: Improve CORS middleware response headers by @gaby in https://github.com/gofiber/fiber/pull/3505
• Middleware/cors: Improve CORS tests coverage by @gaby in https://github.com/gofiber/fiber/pull/3530
• Middleware/csrf: Improve CSRF tests coverage by @gaby in https://github.com/gofiber/fiber/pull/3531
• Middleware/csrf: Add missing CSRF token extractor tests by @gaby in https://github.com/gofiber/fiber/pull/3527
• Middleware/csrf: Refactor CSRF middleware and enhance documentation by @sixcolors in https://github.com/gofiber/fiber/pull/3598
• Middleware/csrf: Enhance CSRF tests to address unsafe header value issue (#2045) by @sixcolors in https://github.com/gofiber/fiber/pull/3485
• Middleware/earlyData: Improve EarlyData middleware tests coverage by @gaby in https://github.com/gofiber/fiber/pull/3520
• Middleware/encryptCookie: Enhance config validation in EncryptCookie middleware by @gaby in https://github.com/gofiber/fiber/pull/3491
• Middleware/envVar: Refactor EnvVar middleware by @gaby in https://github.com/gofiber/fiber/pull/3513
• Middleware/helmet: Improve Helmet middleware tests coverage by @gaby in https://github.com/gofiber/fiber/pull/3523
• Middleware/idempotency: Improve Idempotency middleware tests coverage by @gaby in https://github.com/gofiber/fiber/pull/3521
• Middleware/keyAuth: Enhance KeyAuth middleware to better comply with RFC 6750 by @gaby in https://github.com/gofiber/fiber/pull/3482
• Middleware/logger: Logger Middleware tests to use regex for time validation by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3392
• Middleware/timeout: unify and enhance timeout middleware by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3275
• Middleware/proxy: Fix proxy middleware tests for offline environments by @gaby in https://github.com/gofiber/fiber/pull/3467
• Middleware/proxy: Improve proxy middleware by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3468
• Middleware/static: Improve static middleware security by @gaby in https://github.com/gofiber/fiber/pull/3595
• Middleware/static: Improve sanitizePath performance by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3601
• Value of map is unused in uniqueRouteStack by @ksw2000 in https://github.com/gofiber/fiber/pull/3320
• Reduce the Memory Usage of ignoreHeaders by @ksw2000 in https://github.com/gofiber/fiber/pull/3322
• Improve Performance of getSplicedStrList by @ksw2000 in https://github.com/gofiber/fiber/pull/3318
• Add go1.24 to CI matrix by @gaby in https://github.com/gofiber/fiber/pull/3325
• Migrate randString to rand v2 by @ksw2000 in https://github.com/gofiber/fiber/pull/3329
• Sorting error in sortAcceptedTypes by @ksw2000 in https://github.com/gofiber/fiber/pull/3331
• Reduce the memory usage of RoutePatternMatch by @ksw2000 in https://github.com/gofiber/fiber/pull/3335
• Replace findLastCharsetPosition with strings.LastIndexByte by @ksw2000 in https://github.com/gofiber/fiber/pull/3338
• Replace isInCharset with bytes.IndexByte by @ksw2000 in https://github.com/gofiber/fiber/pull/3342
• Optimize routeParser by using sync.Pool by @ksw2000 in https://github.com/gofiber/fiber/pull/3343
• Fix linter workflow failures by @gaby in https://github.com/gofiber/fiber/pull/3354
• Mark unused tests with t.SkipNow by @alexandear in https://github.com/gofiber/fiber/pull/3366
• Remove two string fields in DefaultCtx to save 32 bytes by @ksw2000 in https://github.com/gofiber/fiber/pull/3353
• Replace treePath with treePathHash in DefaultCtx to reduce memory usage by @ksw2000 in https://github.com/gofiber/fiber/pull/3368
• Add Immutable benchmarks for default case by @gaby in https://github.com/gofiber/fiber/pull/3374
• Remove redundant field method in DefaultCtx by @ksw2000 in https://github.com/gofiber/fiber/pull/3372
• Simplify HealthCheck middleware by @gaby in https://github.com/gofiber/fiber/pull/3380
• Add findNextNonEscapedCharPosition for single-byte charset cases by @ksw2000 in https://github.com/gofiber/fiber/pull/3378
• Change c.Redirect() default status by @andradei in https://github.com/gofiber/fiber/pull/3415
• Improve routing treeBuild flow by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3456
• Add unit-test for header injection by @gaby in https://github.com/gofiber/fiber/pull/3470
• Performance optimizations by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3477
• Make genericParseType return error by @ksw2000 in https://github.com/gofiber/fiber/pull/3473
• Add URI Test case for Test_Ctx_Binders by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3480
• Improve performance for "equalFieldType" function by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3479
• Update minimum go version to 1.24 by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3481
• Use slices.Contains to simplify code by @tongjicoder in https://github.com/gofiber/fiber/pull/3486
• Use maps.Copy to simplify code by @alexandear in https://github.com/gofiber/fiber/pull/3490
• Remove deprecated comments and documenting recent changes by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3498
• Update loop syntax for retry mechanism by @MonkyMars in https://github.com/gofiber/fiber/pull/3516
• Remove repo codecov.yml by @gaby in https://github.com/gofiber/fiber/pull/3525
• Improve Retry addon tests coverage by @gaby in https://github.com/gofiber/fiber/pull/3526
• Improve hooks test coverage by @gaby in https://github.com/gofiber/fiber/pull/3524
• Update codecov configuration by @gaby in https://github.com/gofiber/fiber/pull/3528
• Improve Binder tests coverage by @gaby in https://github.com/gofiber/fiber/pull/3529
• Use GetState to reduce duplicate code by @ksw2000 in https://github.com/gofiber/fiber/pull/3542
• Improve Cookie() validation by @gaby in https://github.com/gofiber/fiber/pull/3546
• Improve Router tests coverage by @gaby in https://github.com/gofiber/fiber/pull/3550
• Improve Accept* compliance with RFC 9110 by @gaby in https://github.com/gofiber/fiber/pull/3548
• Refactor fasthttp iter calls to range loops by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3559
• Fix compression benchmarks by @gaby in https://github.com/gofiber/fiber/pull/3561
• Add iterator helpers for client types by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3560
• Improve iterator performance. by @ksw2000 in https://github.com/gofiber/fiber/pull/3562
• Update utils dependency by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3576
• Refactor Opt-in support for CBOR by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3580
• Simplify generic function calls by @axrav in https://github.com/gofiber/fiber/pull/3578
• Add modernize lint by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3590
• Revert "Add support for context.Context in keyauth middleware" by @sixcolors in https://github.com/gofiber/fiber/pull/3364
• Revert "Add Context Support to RequestID Middleware" by @sixcolors in https://github.com/gofiber/fiber/pull/3365

🐛 Bug Fixes

• Middleware/envVar: Fix missing Allow header in EnvVar middleware per RFC 9110 by @gaby in https://github.com/gofiber/fiber/pull/3570
• Middleware/static: Fix static/favicon middlewares file descriptor leaks by @gaby in https://github.com/gofiber/fiber/pull/3579
• Make Render bind parameter type any again by @efectn in https://github.com/gofiber/fiber/pull/3270
• Fix app.Test() auto-failing when a connection is closed early by @grivera64 in https://github.com/gofiber/fiber/pull/3279
• Align cache middleware with RFC7231 by @miyamo2 in https://github.com/gofiber/fiber/pull/3283
• Goroutine leakage by @JIeJaitt in https://github.com/gofiber/fiber/pull/3306
• `genericParseType parsing large uint leads to overflow by @ksw2000 in https://github.com/gofiber/fiber/pull/3315
• Fix handler order in routing by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3321
• Update binder in form_test by @devhaozi in https://github.com/gofiber/fiber/pull/3336
• Fix client iterators when using break statement by @efectn in https://github.com/gofiber/fiber/pull/3357
• Handling of next param position by @KatzuYoru in https://github.com/gofiber/fiber/pull/3418
• Fix redirection flash messages violate cookie structure by @efectn in https://github.com/gofiber/fiber/pull/3457
• Parsing of IPv6 addresses by @gaby in https://github.com/gofiber/fiber/pull/3466
• Middlewares immutable config handling by @gaby in https://github.com/gofiber/fiber/pull/3494
• Subdomains offset handling by @gaby in https://github.com/gofiber/fiber/pull/3495
• Fix Cache-Control header parsing by @gaby in https://github.com/gofiber/fiber/pull/3534
• Fix Content-Type comparison in Is() by @gaby in https://github.com/gofiber/fiber/pull/3536
• Fix Subdomains() parsing for IDNs by @gaby in https://github.com/gofiber/fiber/pull/3538
• Fix Range() parsing of bytes unit by @gaby in https://github.com/gofiber/fiber/pull/3541
• Fix Range() handling of HTTP 416 per RFC 9110 by @gaby in https://github.com/gofiber/fiber/pull/3552
• Fix Etag validation per RFC 9110 by @gaby in https://github.com/gofiber/fiber/pull/3554
• Fix Accept-Language matching per RFC 4647 by @gaby in https://github.com/gofiber/fiber/pull/3553
• Fix Cache middleware handling of Age by @gaby in https://github.com/gofiber/fiber/pull/3547
• Fix Content-Disposition header per RFC 6266 by @gaby in https://github.com/gofiber/fiber/pull/3551
• Fix Body() handling of Content-Encoding per RFC 9110 by @gaby in https://github.com/gofiber/fiber/pull/3543
• Fix multipart boundary for Client per RFC 2046 by @gaby in https://github.com/gofiber/fiber/pull/3563
• Fix address parsing for leading/trailing spaces by @gaby in https://github.com/gofiber/fiber/pull/3569
• Fix CookieJar domain logic by @gaby in https://github.com/gofiber/fiber/pull/3564
• Fix handling of negative BodyLimit by @gaby in https://github.com/gofiber/fiber/pull/3599
• Fix MIME type equality checks by @gaby in https://github.com/gofiber/fiber/pull/3602

🛠️ Maintenance

• build(deps): bump kenchan0130/actions-system-info from 1.3.0 to 1.3.1 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3492
• build(deps): bump golang.org/x/net from 0.41.0 to 0.42.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3572
• build(deps): bump golang.org/x/net from 0.40.0 to 0.41.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3544
• build(deps): bump golang.org/x/net from 0.31.0 to 0.33.0 in the go_modules group by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3293
• build(deps): bump golang.org/x/crypto from 0.38.0 to 0.39.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3506
• build(deps): bump golang.org/x/crypto from 0.37.0 to 0.38.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3438
• build(deps): bump golang.org/x/crypto from 0.36.0 to 0.37.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3395
• build(deps): bump golang.org/x/crypto from 0.35.0 to 0.36.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3341
• build(deps): bump golang.org/x/crypto from 0.33.0 to 0.35.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3327
• build(deps): bump golang.org/x/crypto from 0.32.0 to 0.33.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3305
• build(deps): bump golang.org/x/crypto from 0.31.0 to 0.32.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3274
• build(deps): bump github.com/valyala/fasthttp from 1.63.0 to 1.64.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3586
• build(deps): bump github.com/valyala/fasthttp from 1.62.0 to 1.63.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3557
• build(deps): bump github.com/valyala/fasthttp from 1.60.0 to 1.62.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3440
• build(deps): bump github.com/valyala/fasthttp from 1.59.0 to 1.60.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3391
• build(deps): bump github.com/valyala/fasthttp from 1.58.0 to 1.59.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3314
• build(deps): bump github.com/tinylib/msgp from 1.2.5 to 1.3.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3447
• build(deps): bump github.com/mattn/go-colorable from 0.1.13 to 0.1.14 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3277
• build(deps): bump github.com/gofiber/utils/v2 from 2.0.0-beta.9 to 2.0.0-beta.10 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3568
• build(deps): bump github.com/gofiber/utils/v2 from 2.0.0-beta.8 to 2.0.0-beta.9 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3540
• build(deps): bump github.com/gofiber/utils/v2 from 2.0.0-beta.7 to 2.0.0-beta.8 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3389
• build(deps): bump github.com/gofiber/schema from 1.5.0 to 1.6.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3574
• build(deps): bump github.com/gofiber/schema from 1.4.0 to 1.5.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3504
• build(deps): bump github.com/gofiber/schema from 1.3.0 to 1.4.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3462
• build(deps): bump github.com/gofiber/schema from 1.2.0 to 1.3.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3308
• build(deps): bump github.com/fxamacker/cbor/v2 from 2.8.0 to 2.9.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3581
• build(deps): bump github.com/fxamacker/cbor/v2 from 2.7.0 to 2.8.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3384
• build(deps): bump DavidAnson/markdownlint-cli2-action from 19 to 20 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3453
• build(deps): bump codecov/codecov-action from 5.4.2 to 5.4.3 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3459
• build(deps): bump codecov/codecov-action from 5.4.0 to 5.4.2 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3413
• build(deps): bump codecov/codecov-action from 5.3.1 to 5.4.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3334
• build(deps): bump codecov/codecov-action from 5.3.0 to 5.3.1 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3295
• build(deps): bump codecov/codecov-action from 5.1.2 to 5.3.0 by @dependabot[bot] in https://github.com/gofiber/fiber/pull/3292

📚 Documentation

• Middleware/adapter: Update adapter middleware documentation by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3317
• Middleware/cors: Enhance CORS middleware documentation with preflight request details and infrastructure considerations by @sixcolors in https://github.com/gofiber/fiber/pull/3509
• Middleware/csrf: fix CSRF handler example by @sixcolors in https://github.com/gofiber/fiber/pull/3412
• Middleware/helmet: Update Helmet Middleware default values by @devhaozi in https://github.com/gofiber/fiber/pull/3348
• Middleware/helmet: Update helmet.md default values by @gaby in https://github.com/gofiber/fiber/pull/3350
• Middleware/idempotency: Idempotency add more detailed description for next method by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3443
• Middleware/logger: Document usage of Custom Tags in Logger middleware by @sixcolors in https://github.com/gofiber/fiber/pull/3446
• Middleware/session: Fix examples in middleware/session by @AuroraTea in https://github.com/gofiber/fiber/pull/3435
• Middleware/static: Fix static middleware CacheDuration data type typo by @grivera64 in https://github.com/gofiber/fiber/pull/3273
• Update intro.md Static Files section by @lars-schumann in https://github.com/gofiber/fiber/pull/3303
• Add ctx.Drop() to whats_new.md by @aliziyacevik in https://github.com/gofiber/fiber/pull/3284
• Add c.Drop() example to whats_new.md by @grivera64 in https://github.com/gofiber/fiber/pull/3285
• Add Retry Addon documentation by @grivera64 in https://github.com/gofiber/fiber/pull/3330
• Add more validation examples by @mazyaryousefinia in https://github.com/gofiber/fiber/pull/3369
• Update docs for State Management by @gaby in https://github.com/gofiber/fiber/pull/3388
• Fix typos by @gaby in https://github.com/gofiber/fiber/pull/3464
• Fix more typos across code base by @gaby in https://github.com/gofiber/fiber/pull/3465
• Incorrect usage of backslash characters in the constraint … by @hungthai1401 in https://github.com/gofiber/fiber/pull/3549
• Fix typos in code and docs by @gaby in https://github.com/gofiber/fiber/pull/3507
• Add custom constraint example by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3539
• Add net/http compatiblity section by @gaby in https://github.com/gofiber/fiber/pull/3556
• Add documentation for Stale() by @gaby in https://github.com/gofiber/fiber/pull/3555
• Update utils guide documentation by @ReneWerner87 in https://github.com/gofiber/fiber/pull/3575

New Contributors

• @aliziyacevik made their first contribution in https://github.com/gofiber/fiber/pull/3284
• @lars-schumann made their first contribution in https://github.com/gofiber/fiber/pull/3303
• @vhespanha made their first contribution in https://github.com/gofiber/fiber/pull/3287
• @alexandear made their first contribution in https://github.com/gofiber/fiber/pull/3366
• @edvardsanta made their first contribution in https://github.com/gofiber/fiber/pull/3359
• @mazyaryousefinia made their first contribution in https://github.com/gofiber/fiber/pull/3369
• @ZihxS made their first contribution in https://github.com/gofiber/fiber/pull/3432
• @KatzuYoru made their first contribution in https://github.com/gofiber/fiber/pull/3418
• @yorickdewid made their first contribution in https://github.com/gofiber/fiber/pull/3428
• @mdelapenya made their first contribution in https://github.com/gofiber/fiber/pull/3460
• @ckoch786 made their first contribution in https://github.com/gofiber/fiber/pull/3230
• @tongjicoder made their first contribution in https://github.com/gofiber/fiber/pull/3486
• @MonkyMars made their first contribution in https://github.com/gofiber/fiber/pull/3516
• @hungthai1401 made their first contribution in https://github.com/gofiber/fiber/pull/3549
• @LaptopCat made their first contribution in https://github.com/gofiber/fiber/pull/3535
• @hotrungnhan made their first contribution in https://github.com/gofiber/fiber/pull/3565
• @axrav made their first contribution in https://github.com/gofiber/fiber/pull/3578

A fully-detailed view of all new features and the migration guide is available in our docs:
https://docs.gofiber.io/next/whats_new

Full Changelog: https://github.com/gofiber/fiber/compare/v3.0.0-beta.4...v3.0.0-beta.5