CVE-2026-122138
Medium
Description
BlueprintUE Self-Hosted Edition 4.2.0 before 4.3.4 contains a login rate limit bypass vulnerability in LoginMiddleware.php that keys failed-login counters on case-sensitive usernames. Unauthenticated attackers can vary username casing against case-insensitive MySQL lookups to get extra attempts and brute-force passwords past the per-account lockout.
SeverityMedium
CVSS5.3
Exploit probability26. percentile0.3%
ProductBlueprintue-self-hosted-edition
PublishedNov 4, 2026
First seenNov 4, 2026
Weakness typeCWE-307CWE-307
How to fix
Update
- blueprintue blueprintue-self-hosted-edition4.3.4 or later
Patches
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| blueprintue blueprintue-self-hosted-edition | 4.2.0 ≤ v < 4.3.4 | 4.3.4 |
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