Password Reset Allows For User Email Enumeration in athou/commafeed


Reported on

Jul 5th 2022


The password reset function at the login page responds to valid and invalid emails in the application. Submitting an invalid email result in "The e-mail address is not assigned to any user account." A valid response results in a message stating an email has been sent.

Proof of Concept

1. Select "Forgot Password" on the commafeed sign on page
2. Enter an invalid email and observe the results suggested in the description.


An attacker can identify valid user email accounts which permits the attacker to increase the application's attack surface. The severity is lowered slightly due to email accounts being separate from the username.


Synchronize response messages in the password reset request. I suggest something like, "You will receive an email in a few minutes if the email is in our system."

We are processing your report and will contact the athou/commafeed team within 24 hours. a month ago
Jérémie Panzer modified the Severity from High to Low 21 days ago
The researcher has received a minor penalty to their credibility for miscalculating the severity: -1
Jérémie Panzer validated this vulnerability 21 days ago
saharshtapi has been awarded the disclosure bounty
The fix bounty is now up for grabs
The researcher's credibility has increased: +7
Jérémie Panzer confirmed that a fix has been merged on 9bbfc2 21 days ago
The fix bounty has been dropped
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