CVE-2026-105866 Payload - Authentication Bypass

Payload before 3.90.0 and canary versions before 4.0.0-canary.34 contain an account lockout abuse vulnerability caused by improper handling of local-authentication collections, letting unauthenticated attackers prevent account sign-in by triggering lockout, exploit requires knowledge of account email or username.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.35% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
6 October 2026
Updated
15 October 2026
Weakness
CWE-307

Vendor fix

Update to version 3.90.0 or 4.0.0-canary.34 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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