CVE-2026-122139

Description

blueprintUE Self-Hosted Edition before 4.3.3 contains an account enumeration vulnerability in ForgotPasswordMiddleware.php that allows unauthenticated attackers to identify registered email addresses. Attackers can compare password reset redirect targets for submitted emails, and failed lookups are never rate-limited, enabling unlimited enumeration attempts.

References

• https://github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.2/app/middlewares/ForgotPasswordMiddleware.php#L130-L157
• https://github.com/blueprintue/blueprintue-self-hosted-edition/commit/45832742182a6c4438a0d58de95ba9c7686851f2
• https://github.com/blueprintue/blueprintue-self-hosted-edition/pull/265
• https://github.com/blueprintue/blueprintue-self-hosted-edition/releases/tag/v4.3.3
• https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-fwgq-c3c6-p67j