CVE-2026-92161 FriendsOfFlarum OAuth - Authentication Bypass

FriendsOfFlarum OAuth < 1.7.4 and < 2.0.0-beta.4 contains an authentication bypass caused by improper verification of Discord OAuth email addresses, letting unauthenticated attackers link attacker-controlled Discord accounts to existing users and authenticate as them without passwords, exploit requires victim's email not linked to Discord.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.27% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
25 September 2026
Updated
15 October 2026
Weakness
CWE-345

Vendor fix

Update to versions 1.7.4 or 2.0.0-beta.4 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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