From 478a2a31478ccdca1dc4472ba39ceea6c0feed70 Mon Sep 17 00:00:00 2001
From: rahulramesha <71900764+rahulramesha@users.noreply.github.com>
Date: Tue, 17 Aug 2021 16:24:46 +0530
Subject: [PATCH] adding check for base64 (#6532)

---
 app/client/src/workers/validations.ts | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/app/client/src/workers/validations.ts b/app/client/src/workers/validations.ts
index 4b5d9c211e..b466dfb781 100644
--- a/app/client/src/workers/validations.ts
+++ b/app/client/src/workers/validations.ts
@@ -11,11 +11,9 @@ import _, {
   isObject,
   isPlainObject,
   isString,
-  startsWith,
   toString,
   uniq,
 } from "lodash";
-import { WidgetProps } from "../widgets/BaseWidget";
 
 import moment from "moment";
 import { ValidationConfig } from "constants/PropertyControlConstants";
@@ -657,6 +655,7 @@ export const VALIDATORS: Record<ValidationTypes, Validator> = {
       parsed: config.params?.default || "",
       message: `${WIDGET_TYPE_VALIDATION_ERROR}: ${getExpectedType(config)}`,
     };
+    const base64Regex = /^(?:[A-Za-z\d+\/]{4})*?(?:[A-Za-z\d+\/]{2}(?:==)?|[A-Za-z\d+\/]{3}=?)?$/;
     const base64ImageRegex = /^data:image\/.*;base64/;
     const imageUrlRegex = /(http(s?):)([/|.|\w|\s|-])*\.(?:jpeg|jpg|gif|png)??(?:&?[^=&]*=[^=&]*)*/;
     if (
@@ -677,7 +676,7 @@ export const VALIDATORS: Record<ValidationTypes, Validator> = {
           parsed: value,
         };
       }
-      if (btoa(atob(value)) === value) {
+      if (base64Regex.test(value) && btoa(atob(value)) === value) {
         return { isValid: true, parsed: `data:image/png;base64,${value}` };
       }
     }