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.
Fix
Patch, vendor advisory and mitigation references on NVD 1
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.9 · nodebbNVD modified 2026-10-30 18:52
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 5
- https://github.com/NodeBB/NodeBB/commit/376d14abb7fffd8ea14f3a2f96baa20ffee5cdb3 patch
- https://github.com/NodeBB/NodeBB/blob/c3d8dc512292a376f19e06cb93512bdff2505102/src/controllers/authentication.js#L34 technical-description
- https://github.com/NodeBB/NodeBB/blob/c3d8dc512292a376f19e06cb93512bdff2505102/src/user/interstitials.js#L124 technical-description
- https://github.com/NodeBB/NodeBB product
- https://www.vulncheck.com/advisories/nodebb-1.18.0-through-4.16.5-authorization-bypass-via-register-complete-uid third-party-advisory