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 .
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
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/LinYuanyi1/cve-request-poc/blob/master/x-springboot/02_sms-code-acco… (exploit)
- github.com/yzcheng90/X-SpringBoot/blob/d74ddba989c0449948ff1ddb0d211b6a7ce81bfa… (technical-description)
- github.com/yzcheng90/X-SpringBoot (product)
- www.vulncheck.com/advisories/x-springboot-through-6.0-authentication-bypass-via… (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.