CVE-2026-122138
Dashboard / Vulnerabilities / CVE-2026-122138
Summary: BlueprintUE Self-Hosted Edition 4.2.0 before 4.3.4 Login Rate Limit Bypass
Details: 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.
References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/122xxx/CVE-2026-122138.json, https://github.com/blueprintue/blueprintue-self-hosted-edition/releases/tag/v4.3.4, https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-773r-585g-6vc3, https://nvd.nist.gov/vuln/detail/CVE-2026-122138, https://www.vulncheck.com/advisories/blueprintue-self-hosted-edition-4.2.0-before-4.3.4-login-rate-limit-bypass, https://github.com/blueprintue/blueprintue-self-hosted-edition/commit/bd4af38d2f7d499be23fc4106f93980a1348ddd7, https://github.com/blueprintue/blueprintue-self-hosted-edition/pull/267, https://github.com/blueprintue/blueprintue-self-hosted-edition, https://github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.3/app/middlewares/LoginMiddleware.php#L119-L158
Affected packages
Package
Name:
Purl:
Affected ranges
Type: GIT
Events:
