Authentication Bypass in HotGo 2.15.1 by Bufanyun
CVE-2026-120447

9.2CRITICAL

Key Information:

Vendor

Bufanyun

Status
Hotgo
Vendor
CVE Published:
2 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-120447?

HotGo version 2.15.1 contains a critical authentication bypass vulnerability that allows attackers to circumvent the SMS verification process. By supplying a manipulated Code field to the /admin/sms/send endpoint, unauthenticated users can specify the SMS login verification code. If they possess a target user's mobile number, attackers can set the code to gain unauthorized access through the /admin/site/mobileLogin endpoint, potentially compromising administrator accounts and sensitive data.

Affected Version(s)

HotGo 0 <= 2.15.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-120447 - Proof of Concept

References

https://github.com/bufanyun/hotgo/issues/240
issue-tracking
https://github.com/bufanyun/hotgo/commit/cb57056c746650e6...
patch
https://vul.yulun.ac.cn/20261102/hotgo/
exploit

CVSS V4

Score:
9.2
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Wu Yulun
Xingzhi Ruan
.