Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck
CVE-2026-120007NodeBB 1.18.0 through 4.16.5 Authorization Bypass via /register/complete uid
Medium 6.5
In plain English
A medium-severity authorization bypass via user-controlled key in NodeBB from NodeBB. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 72.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
References
- Patch Commit patch
- 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/NodeBB product
- VulnCheck Advisory: NodeBB 1.18.0 through 4.16.5 Authorization Bypass via /register/complete uid third-party-advisory