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Business information leak - Financial Information


Business information is obtained, such as:

  • Mail
  • Payment reference and description
  • Total value
  • Product information
  • Collectors line of business
  • Payers role


Obtain sensitive information to create new attack vectors.


According to the classification of the information found, establish the necessary controls so that the information is accessible only to the indicated persons.


An attacker authenticated from the Internet.

Expected Remediation Time

⌚ 120 minutes.


Default score using CVSS 3.1. It may change depending on the context of the vulnerability.


  • Attack vector: N
  • Attack complexity: L
  • Privileges required: L
  • User interaction: N
  • Scope: U
  • Confidentiality: L
  • Integrity: N
  • Availability: N


  • Exploit code madurity: U
  • Remediation level: O
  • Report confidence: X


  • Vector string: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:X
  • Score:
    • Base: 4.3
    • Temporal: 3.8
  • Severity:
    • Base: Medium
    • Temporal: Low

Code Examples

Compliant code

The application does not include any sensitive data in the responses"/user/generateToken", (req, res) => {
if user.isLoggedIn{
let data = {
userName: req.body.user,
password: req.body.password,
...other user sensitive information
if(req.body.userCredentials == "ADMIN"){

Non compliant code

There is a method in the application that includes sensitive data in the response"/user/generateToken", (req, res) => {
let data = {
userName: req.body.user,
password: req.body.password,
...other user sensitive information


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