diff --git a/lib/pxcontext.js b/lib/pxcontext.js
index 85b84be6..dc2eb8d4 100644
--- a/lib/pxcontext.js
+++ b/lib/pxcontext.js
@@ -8,6 +8,7 @@ class PxContext {
         const userAgent = request.get('user-agent') || request.get('User-Agent') || 'none';
         const mobileSdkHeader = 'x-px-authorization';
         const mobileSdkOriginalTokenHeader = 'x-px-original-token';
+        const vidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/;
 
         this.cookies = {};
         this.score = 0;
@@ -37,7 +38,7 @@ class PxContext {
                     this.cookies[key] = request.cookies[key];
                 } else if (key === '_pxhd') {
                     this.pxhd = request.cookies[key];
-                } else if (key === '_pxvid' || key === 'pxvid') {
+                } else if ((key === '_pxvid' || key === 'pxvid') && vidRegex.test(request.cookies[key])) {
                     this.vid = request.cookies[key];
                     this.vidSource = 'vid_cookie';
                 }