Bump github.com/golang-jwt/jwt/v4 from 4.5.1 to 4.5.2 (#498)

Bumps [github.com/golang-jwt/jwt/v4](https://github.com/golang-jwt/jwt) from 4.5.1 to 4.5.2.
- [Release notes](https://github.com/golang-jwt/jwt/releases)
- [Changelog](https://github.com/golang-jwt/jwt/blob/main/VERSION_HISTORY.md)
- [Commits](https://github.com/golang-jwt/jwt/compare/v4.5.1...v4.5.2)

---
updated-dependencies:
- dependency-name: github.com/golang-jwt/jwt/v4
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -1,7 +1,7 @@
 module github.com/gabrie30/ghorg
 
 go 1.22.1
-toolchain go1.23.6
+toolchain go1.24.1
 
 require (
 	code.gitea.io/sdk/gitea v0.20.0
@@ -32,7 +32,7 @@ require (
 	github.com/eliukblau/pixterm/pkg/ansimage v0.0.0-20191210081756-9fb6cf8c2f75 // indirect
 	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/go-fed/httpsig v1.1.0 // indirect
-	github.com/golang-jwt/jwt/v4 v4.5.1 // indirect
+	github.com/golang-jwt/jwt/v4 v4.5.2 // indirect
 	github.com/gomarkdown/markdown v0.0.0-20191123064959-2c17d62f5098 // indirect
 	github.com/google/go-github/v69 v69.0.0 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect

go.sum

@@ -45,8 +45,8 @@ github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nos
 github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
 github.com/go-fed/httpsig v1.1.0 h1:9M+hb0jkEICD8/cAiNqEB66R87tTINszBRTjwjQzWcI=
 github.com/go-fed/httpsig v1.1.0/go.mod h1:RCMrTZvN1bJYtofsG4rd5NaO5obxQ5xBkdiS7xsT7bM=
-github.com/golang-jwt/jwt/v4 v4.5.1 h1:JdqV9zKUdtaa9gdPlywC3aeoEsR681PlKC+4F5gQgeo=
-github.com/golang-jwt/jwt/v4 v4.5.1/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
+github.com/golang-jwt/jwt/v4 v4.5.2 h1:YtQM7lnr8iZ+j5q71MGKkNw9Mn7AjHM68uc9g5fXeUI=
+github.com/golang-jwt/jwt/v4 v4.5.2/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
 github.com/gomarkdown/markdown v0.0.0-20191123064959-2c17d62f5098 h1:Qxs3bNRWe8GTcKMxYOSXm0jx6j0de8XUtb/fsP3GZ0I=
 github.com/gomarkdown/markdown v0.0.0-20191123064959-2c17d62f5098/go.mod h1:aii0r/K0ZnHv7G0KF7xy1v0A7s2Ljrb5byB7MO5p6TU=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=

vendor/github.com/golang-jwt/jwt/v4/parser.go

@@ -7,6 +7,8 @@ import (
 	"strings"
 )
 
+const tokenDelimiter = "."
+
 type Parser struct {
 	// If populated, only these methods will be considered valid.
 	//
@@ -122,9 +124,10 @@ func (p *Parser) ParseWithClaims(tokenString string, claims Claims, keyFunc Keyf
 // It's only ever useful in cases where you know the signature is valid (because it has
 // been checked previously in the stack) and you want to extract values from it.
 func (p *Parser) ParseUnverified(tokenString string, claims Claims) (token *Token, parts []string, err error) {
-	parts = strings.Split(tokenString, ".")
-	if len(parts) != 3 {
-		return nil, parts, NewValidationError("token contains an invalid number of segments", ValidationErrorMalformed)
+	var ok bool
+	parts, ok = splitToken(tokenString)
+	if !ok {
+		return nil, nil, NewValidationError("token contains an invalid number of segments", ValidationErrorMalformed)
 	}
 
 	token = &Token{Raw: tokenString}
@@ -174,3 +177,30 @@ func (p *Parser) ParseUnverified(tokenString string, claims Claims) (token *Toke
 
 	return token, parts, nil
 }
+
+// splitToken splits a token string into three parts: header, claims, and signature. It will only
+// return true if the token contains exactly two delimiters and three parts. In all other cases, it
+// will return nil parts and false.
+func splitToken(token string) ([]string, bool) {
+	parts := make([]string, 3)
+	header, remain, ok := strings.Cut(token, tokenDelimiter)
+	if !ok {
+		return nil, false
+	}
+	parts[0] = header
+	claims, remain, ok := strings.Cut(remain, tokenDelimiter)
+	if !ok {
+		return nil, false
+	}
+	parts[1] = claims
+	// One more cut to ensure the signature is the last part of the token and there are no more
+	// delimiters. This avoids an issue where malicious input could contain additional delimiters
+	// causing unecessary overhead parsing tokens.
+	signature, _, unexpected := strings.Cut(remain, tokenDelimiter)
+	if unexpected {
+		return nil, false
+	}
+	parts[2] = signature
+
+	return parts, true
+}

vendor/modules.txt

@@ -79,7 +79,7 @@ github.com/fsnotify/fsnotify
 # github.com/go-fed/httpsig v1.1.0
 ## explicit; go 1.13
 github.com/go-fed/httpsig
-# github.com/golang-jwt/jwt/v4 v4.5.1
+# github.com/golang-jwt/jwt/v4 v4.5.2
 ## explicit; go 1.16
 github.com/golang-jwt/jwt/v4
 # github.com/gomarkdown/markdown v0.0.0-20191123064959-2c17d62f5098