CVE-2026-120007: NodeBB 1.18.0 through 4.16.5 Authorization Bypass via /register/complete uid

Published Oct 30, 2026

Updated

NodeBB 1.18.0 through 4.16.5 contains an authorization bypass vulnerability that allows unauthenticated visitors to act on other accounts by supplying a uid during POST /register. Attackers can submit an empty email at the /register/complete interstitial to clear a victim's email and confirmation state and revoke all their sessions.

Event History

Oct 30, 2026

CVE Published

via MITRE·06:52 PM

Data Sourced

via MITRE·06:52 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·07:18 PM

DescriptionSeverityWeakness

Frequently Asked Questions

Who can exploit this issue?

Any unauthenticated remote visitor can exploit it. No existing account, privileges, or user interaction are required.

What does an attacker need to target another account?

The attacker needs to supply the target account's uid in a POST request to /register and then submit an empty email through the /register/complete interstitial. The provided information does not state how an attacker would obtain a victim's uid.

What is the impact on a targeted user?

An attacker can clear the victim's email address and confirmation state and revoke all of the victim's active sessions. The vulnerability is described as allowing attackers to act on other accounts.

Which NodeBB versions are affected?

NodeBB versions 1.18.0 through 4.16.5 are affected.

CVE-2026-120007: NodeBB 1.18.0 through 4.16.5 Authorization Bypass via /register/complete uid

Event History

Frequently Asked Questions

Who can exploit this issue?

What does an attacker need to target another account?

What is the impact on a targeted user?

Which NodeBB versions are affected?

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Frequently Asked Questions

Who can exploit this issue?

What does an attacker need to target another account?

What is the impact on a targeted user?

Which NodeBB versions are affected?