CVE-2026-92161

9.8 CRITICALpublic exploit available

Published 2026-09-25 · Updated 2026-09-29

AI risk analysis

Summary: The flaw in FriendsOfFlarum OAuth allows unauthenticated attackers to link their Discord account to a victim's Flarum account by exploiting the lack of email verification checks, potentially compromising user accounts, including administrator accounts.
Exploitability: Exploitation is moderately difficult, requiring knowledge of the victim's email address and the absence of a verified email on Discord. Precondition is that the victim's email is not already associated with a Discord account.
Blast radius: If exploited, this can lead to unauthorized access to user accounts, including potentially sensitive administrator accounts, without the need for password credentials.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to FriendsOfFlarum version 1.7.4 or later.

auth-bypasswebsocial-media

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

FriendsOfFlarum OAuth allows users to log in to Flarum with GitHub, Twitter, Facebook, and other providers. Prior to 1.7.4 and 2.0.0-beta.4, the Discord OAuth provider does not check the verified field returned for an OAuth email before passing the address to Flarum core as trusted through provideTrustedEmail(). When Discord sign-in is enabled, an unauthenticated attacker who knows the email address of a Flarum user can configure a Discord account with that unverified address and a verified phone number, then sign in to cause Flarum to match the trusted address, link the attacker-controlled Discord identity to the existing user, and authenticate as the victim without a password or victim interaction. Exploitation requires that the victim's email address is not already associated with a Discord account, and it can compromise administrator accounts. Other bundled providers were not confirmed to be practically exploitable by this method because their relevant authentication flows return only verified or confirmed email addresses. This issue is fixed in versions 1.7.4 and 2.0.0-beta.4.

CVSS vector

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

Weaknesses

CWE-345

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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