Vulnerability · Published Sep 25, 2026 · Assigned by VulnCheck

CVE-2026-97063X-SpringBoot through 6.0 Authentication Bypass via Login Code

Critical 9.1

In plain English

A critical-severity improper authentication in X-SpringBoot from yzcheng90. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.3%top 78.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
yzcheng90	X-SpringBoot	0 – through 6.0

Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

Proof of concept exploit
Vulnerable code technical-description
https://github.com/yzcheng90/X-SpringBoot product
VulnCheck Advisory: X-SpringBoot through 6.0 Authentication Bypass via Login Code third-party-advisory