Auth bypass in Bufanyun Hotgo
CVE-2026-120447
HotGo 2.8.4 through 2.15.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to choose the SMS login verification code by supplying the Code field to /admin/sms/send. Attackers who know a user's mobile number can set a known code and sign in through /admin/site/mobileLogin to take over accounts, including administrators.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
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/bufanyun/hotgo/issues/240 (issue-tracking)
- github.com/bufanyun/hotgo/commit/cb57056c746650e6ff86dec1e97d404b63dcfd30 (patch)
- vul.yulun.ac.cn/20261102/hotgo/ (exploit)
- github.com/bufanyun/hotgo/blob/269b2f9e435cf8ff6b18d53bc053a905f4e02d11/server/… (technical-description)
- github.com/bufanyun/hotgo/blob/269b2f9e435cf8ff6b18d53bc053a905f4e02d11/server/… (technical-description)
- www.vulncheck.com/advisories/hotgo-through-2.15.1-authentication-bypass-via-cli… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-120447?
- CVE-2026-120447 is a high-severity vulnerability in Bufanyun Hotgo, classified under Improper Authentication. CVSS score: 8.1/10. Published 2026-11-02.
- How severe is CVE-2026-120447?
- High severity. CVSS v3 base score is 8.1 out of 10.