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Low 35 Bitcoin

Remove recovery codes

Public commit record

What the developer wrote

Authored by Nicolas Dorier

28/100 · Opaque
Remove recovery codes
✓ Subject identifies a change! No meaningful explanatory body! Opaque security-relevant change
The short version

What changed, and why it matters

This commit removes the 2FA recovery-code feature from BTCPay Server. Recovery codes are normally printed when you enable two-factor authentication and used as a backup way to log in if you lose your phone. After this change, users can no longer create or use those codes. The commit does not add a replacement backup login path, so anyone who loses access to their authenticator app may be permanently locked out of their account unless they have another login method configured. The change is presented as a feature removal, not as a fix for a specific security bug.

Recommended action

Treat this as a product/security change requiring review. Verify whether an alternative account-recovery method (e.g., FIDO2 backup credentials, admin reset, or email reset) is documented and functional. If no replacement exists, consider warning users before deployment and updating documentation. If the removal was intended to address a vulnerability in recovery-code handling, request a security advisory or CVE from the project.

Security signals we found

01

Removal of account-recovery mechanism without replacement

02

Reduced resilience of 2FA authentication flow

03

Potential increase in account lockout risk for users relying on TOTP authenticator

04

No explicit security bug described in commit message or diff

Risk score

Why this scored 35/100

Our methodology →
Potential impact 8/30
Exploitability 5/25
Stealth signal 3/15
Affected reach 10/15
Confidence 6/10
Evidence quality 3/5
Human-validated context

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