diff --git a/v2/pkg/protocols/common/expressions/variables.go b/v2/pkg/protocols/common/expressions/variables.go
index 5bacaf60d..5026cef0e 100644
--- a/v2/pkg/protocols/common/expressions/variables.go
+++ b/v2/pkg/protocols/common/expressions/variables.go
@@ -6,7 +6,7 @@ import (
 	"strings"
 )
 
-var unresolvedVariablesRegex = regexp.MustCompile(`\{\{([^}]+)\}\}["'\)\}]*`)
+var unresolvedVariablesRegex = regexp.MustCompile(`(?:%7[B|b]|\{){2}([^}]+)(?:%7[D|d]|\}){2}["'\)\}]*`)
 
 // ContainsUnresolvedVariables returns an error with variable names if the passed
 // input contains unresolved {{<pattern-here>}} variables.
diff --git a/v2/pkg/protocols/common/expressions/variables_test.go b/v2/pkg/protocols/common/expressions/variables_test.go
index 55c35fffb..61d071351 100644
--- a/v2/pkg/protocols/common/expressions/variables_test.go
+++ b/v2/pkg/protocols/common/expressions/variables_test.go
@@ -15,6 +15,7 @@ func TestUnresolvedVariablesCheck(t *testing.T) {
 		{"{{test}}", errors.New("unresolved variables found: test")},
 		{"{{test}}/{{another}}", errors.New("unresolved variables found: test,another")},
 		{"test", nil},
+		{"%7b%7btest%7d%7d", errors.New("unresolved variables found: test")},
 	}
 	for _, test := range tests {
 		err := ContainsUnresolvedVariables(test.data)