CVE-2026-120007
NodeBB 1.18.0 through 4.16.5 Authorization Bypass via /register/complete uid
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 30, 2026
- Updated
- Oct 30, 2026
- Reserved
- Oct 30, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
NodeBBNodeBB |
|
References
- Patch Commitpatch
- Registration body saved to session (4.16.5)technical-description
- Email interstitial removal on attacker-chosen uid (4.16.5)technical-description
- https://github.com/NodeBB/NodeBBproduct
- VulnCheck Advisory: NodeBB 1.18.0 through 4.16.5 Authorization Bypass via /register/complete uidthird-party-advisory
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