🐛 [Bug]: EncryptCookie middleware panics the app with index out of range error #3954
Description
Bug Description
My tech stack uses NuxtJS v4 and Shadcn UI for it. It has a cookie named sidebar:state and it breaks my fiber v3 application, when i remove this cookie it resolves. I think library conflict with cookie names that has : character in it. For now i changed the cookie name but it's a temporary fix.
panic: runtime error: index out of range [1] with length 1
goroutine 74 [running]:
runtime/debug.Stack()
/opt/homebrew/Cellar/go/1.25.3/libexec/src/runtime/debug/stack.go:26 +0x64
github.com/gofiber/fiber/v3/middleware/recover.defaultStackTraceHandler({0x140004b13f8?, 0x1044e9b08?}, {0x104fd0720, 0x1400042e2d0})
/Users/divergent/go/pkg/mod/github.com/gofiber/fiber/[email protected]/middleware/recover/recover.go:12 +0x24
project/internal/server.RunServer.New.func1.1()
/Users/divergent/go/pkg/mod/github.com/gofiber/fiber/[email protected]/middleware/recover/recover.go:31 +0x78
panic({0x104fd0720?, 0x1400042e2d0?})
/opt/homebrew/Cellar/go/1.25.3/libexec/src/runtime/panic.go:783 +0x120
github.com/gofiber/fiber/v3/middleware/encryptcookie.New.func1.(*RequestHeader).Cookies.1(...)
/Users/divergent/go/pkg/mod/github.com/valyala/[email protected]/header.go:1163
github.com/gofiber/fiber/v3/middleware/encryptcookie.New.func1({0x1050579a8, 0x14000179508})
/Users/divergent/go/pkg/mod/github.com/gofiber/fiber/[email protected]/middleware/encryptcookie/encryptcookie.go:23 +0x83c
github.com/gofiber/fiber/v3.(*DefaultCtx).Next(0x14000408ba0?)
/Users/divergent/go/pkg/mod/github.com/gofiber/fiber/[email protected]/ctx.go:235 +0x74
github.com/gofiber/fiber/v3/middleware/logger.New.func3({0x1050579a8, 0x14000179508})
/Users/divergent/go/pkg/mod/github.com/gofiber/fiber/[email protected]/middleware/logger/logger.go:109 +0x260
github.com/gofiber/fiber/v3.(*DefaultCtx).Next(0x140004b19c8?)
/Users/divergent/go/pkg/mod/github.com/gofiber/fiber/[email protected]/ctx.go:235 +0x74
github.com/gofiber/fiber/v3/middleware/compress.New.func3({0x1050579a8, 0x14000179508})
/Users/divergent/go/pkg/mod/github.com/gofiber/fiber/[email protected]/middleware/compress/compress.go:99 +0x50
github.com/gofiber/fiber/v3.(*DefaultCtx).Next(0x9?)
/Users/divergent/go/pkg/mod/github.com/gofiber/fiber/[email protected]/ctx.go:235 +0x74
project/internal/server.RunServer.New.func1({0x1050579a8?, 0x14000179508?})
/Users/divergent/go/pkg/mod/github.com/gofiber/fiber/[email protected]/middleware/recover/recover.go:43 +0xbc
github.com/gofiber/fiber/v3.(*App).next(0x140002e6008, 0x14000179508)
/Users/divergent/go/pkg/mod/github.com/gofiber/fiber/[email protected]/router.go:156 +0x1a0
github.com/gofiber/fiber/v3.(*App).requestHandler(0x140002e6008, 0x1048c19a0?)
/Users/divergent/go/pkg/mod/github.com/gofiber/fiber/[email protected]/router.go:332 +0x118
github.com/valyala/fasthttp.(*Server).serveConn(0x140002b8008, {0x1050488d0, 0x14000482918})
/Users/divergent/go/pkg/mod/github.com/valyala/[email protected]/server.go:2465 +0xe00
github.com/valyala/fasthttp.(*workerPool).workerFunc(0x1400013a480, 0x140001b9c00)
/Users/divergent/go/pkg/mod/github.com/valyala/[email protected]/workerpool.go:225 +0x6c
github.com/valyala/fasthttp.(*workerPool).getCh.func1()
/Users/divergent/go/pkg/mod/github.com/valyala/[email protected]/workerpool.go:197 +0x30
created by github.com/valyala/fasthttp.(*workerPool).getCh in goroutine 1
/Users/divergent/go/pkg/mod/github.com/valyala/[email protected]/workerpool.go:196 +0x1b8
How to Reproduce
Steps to reproduce the behavior:
- Enable encryptcookie middleware and add a cookie named
sidebar:state - Reload the application
- Send a request using this cookie
- See the app is crashing with log i provide
Expected Behavior
App should run without any error.
Fiber Version
v3.0.0-rc3
Code Snippet (optional)
app.Use(encryptcookie.New(encryptcookie.Config{
Key: config.MustString("app.key"),
}))Checklist:
- I agree to follow Fiber's Code of Conduct.
- I have checked for existing issues that describe my problem prior to opening this one.
- I understand that improperly formatted bug reports may be closed without explanation.
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