CVE-2026-120007

medium

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.

References

https://www.vulncheck.com/advisories/nodebb-1.18.0-through-4.16.5-authorization-bypass-via-register-complete-uid

https://github.com/NodeBB/NodeBB/commit/376d14abb7fffd8ea14f3a2f96baa20ffee5cdb3

https://github.com/NodeBB/NodeBB/blob/c3d8dc512292a376f19e06cb93512bdff2505102/src/user/interstitials.js#L124

https://github.com/NodeBB/NodeBB/blob/c3d8dc512292a376f19e06cb93512bdff2505102/src/controllers/authentication.js#L34

https://github.com/NodeBB/NodeBB

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-114327

Details

Source: Mitre, NVD

Published: 2026-10-30

Updated: 2026-10-30

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Severity: Medium

CVSS v4

Base Score: 6.9

Vector: 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

Severity: Medium

EPSS

EPSS: 0.00338