Description
NodeBB Forum Software is powered by Node.js and supports either Redis, MongoDB, or a PostgreSQL database. Due to an unnecessarily strict conditional in the code handling the first step of the SSO process, the pre-existing logic that added (and later checked) a nonce was inadvertently rendered opt-in instead of opt-out. This re-exposed a vulnerability in that a specially crafted Man-in-the-Middle (MITM) attack could theoretically take over another user account during the single sign-on process. The issue has been fully patched in version 1.17.2.
References (3)
Core 3
Core References
Exploit, Third Party Advisory x_refsource_misc
https://blogs.opera.com/security/2022/03/bug-bounty-adventures-a-nodebb-0-day/
Exploit, Patch, Third Party Advisory x_refsource_confirm
https://github.com/NodeBB/NodeBB/security/advisories/GHSA-xmgg-fx9p-prq6
Patch, Third Party Advisory x_refsource_misc
https://github.com/NodeBB/NodeBB/commit/a2400f6baff44cb2996487bcd0cc6e2acc74b3d4
Scores
CVSS v3
8.8
EPSS
0.0015
EPSS Percentile
34.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-352
Status
published
Products (2)
nodebb/nodebb
< 1.17.2
npm/nodebb
0 - 1.17.2npm
Published
Sep 02, 2022
Tracked Since
Feb 18, 2026