Auth bypass in Yzcheng90 X-Springboot
CVE-2026-97063
X-SpringBoot through 6.0 returns login verification codes in HTTP responses from unauthenticated endpoints GET /sys/mobile/code and GET /sys/email/code without sending them to account owners. Attackers can request codes using known mobile numbers or email addresses, read them from responses, and authenticate as victims via POST /sys/emailOrMobileLogin/login to hijack accounts.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (22.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- Proof of concept (exploit)
- Vulnerable code (technical-description)
- github.com/yzcheng90/X-SpringBoot (product)
- VulnCheck Advisory: X-SpringBoot through 6.0 Authentication Bypass via Login Code (third-party-advisory)
Frequently asked questions
- What is CVE-2026-97063?
- CVE-2026-97063 is a critical-severity vulnerability in Yzcheng90 X-Springboot, classified under Improper Authentication. CVSS score: 9.1/10. Published 2026-09-25.
- How severe is CVE-2026-97063?
- Critical severity. CVSS v3 base score is 9.1 out of 10.