The Blend platform makes it easy for borrowers to apply for a mortgage from any desktop, tablet, or mobile device. Also, lenders can work in parallel and follow up instantly with additional requests and information.
Since the Blend platform must collect, manage, and protect sensitive user data, such as PII and imported bank account data, we strive to ensure that the platform is as secure as possible. As such, we value (and reward) the responsible disclosure of any vulnerabilities to us.
This program adheres to the Bugcrowd Vulnerability Rating Taxonomy for the initial prioritization of findings. However, it is important to note that in some cases a vulnerability priority will be modified due to its likelihood or impact. In any instance where an issue is downgraded, a full, detailed explanation will be provided to the researcher - along with the opportunity to appeal, and make a case for a higher priority.
Last updated 2 Oct 2018 19:46:53 UTC
Technical severity | Reward range
p1 Critical | Starting at: $1,500
p2 Severe | Starting at: $1,200
p3 Moderate | Starting at: $500
p4 Low | Starting at: $150
P5 submissions do not receive any rewards for this program.
Target name | Type
https://knox.beta.blendlabs.com | Other
Target name | Type
<https://www.blendlabs.com> | Website
<https://www.blend.com> | Website
<https://blend.com> | Website
<https://api.pentest.blendlabs.com/> | API
Any domain/property of Blend or its customers not listed in the targets section is out of scope. This includes any/all subdomains not listed above.
The Blend platform is composed of an AngularJS/Express.js front-end and several Express.js microservices connected to various backend databases. The AngularJS/Express.js front-end contains a lender view, which allows lenders to manage loans in the system, and a borrower view, which allows borrowers to complete a mortgage loan application. Lender accounts can only be created by an authorized Admin, but borrower accounts can either be created through self- registration or an invitation email.
This program has been known to generate a large number of emails - please take a moment to set up a filter that will likely help in mitigating the noise created by these messages. Please visit https://researcherdocs.bugcrowd.com/docs/email-filter if you need help with this.
The relationship between a lender and a borrower is unique in that lenders are privy to a great deal of sensitive financial information relating to a borrower. Furthermore, lenders within a single organization may need access to the data of the borrowers under other lenders within the same organization. What might initially appear to be a security finding of inappropriate data disclosure may actually be intended functionality when it comes to a lender’s access of borrower data.
Scanning is not permitted since the Blend platform is hosted behind an AWS ELB (AWS policy).
This program follows Bugcrowd’s standard disclosure terms.
This program does not offer financial or point-based rewards for P5 — Informational findings. Learn more about Bugcrowd’s VRT.
Contact us if you want more information.