---
title: "CVE-2026-120447: HotGo - Authentication Bypass"
description: "HotGo <= 2.15.1 contains an authentication bypass caused by unauthenticated attackers setting SMS login verification codes via /admin/sms/send, letting attackers take over user accounts including administrators, exploit requires knowledge of user's mobile number."
url: https://panop.io/threat-heartbeat/CVE-2026-120447/
---

# CVE-2026-120447 HotGo - Authentication Bypass

HotGo <= 2.15.1 contains an authentication bypass caused by unauthenticated attackers setting SMS login verification codes via /admin/sms/send, letting attackers take over user accounts including administrators, exploit requires knowledge of user's mobile number.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-120447)

## Details

Type

Authentication Bypass

Impact

Broken Authentication

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

2 November 2026

Updated

3 November 2026

Weakness

[CWE-287](https://cwe.mitre.org/data/definitions/287.html)

## Vendor fix

Update to the latest version beyond 2.15.1.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-120447](https://nvd.nist.gov/vuln/detail/CVE-2026-120447)
- [https://www.vulncheck.com/advisories/hotgo-through-2.15.1-authentication-bypass-via-client-set-sms-verification-code](https://www.vulncheck.com/advisories/hotgo-through-2.15.1-authentication-bypass-via-client-set-sms-verification-code)
- [https://github.com/bufanyun/hotgo/blob/269b2f9e435cf8ff6b18d53bc053a905f4e02d11/server/internal/logic/sys/sms\_log.go](https://github.com/bufanyun/hotgo/blob/269b2f9e435cf8ff6b18d53bc053a905f4e02d11/server/internal/logic/sys/sms_log.go)
- [https://github.com/bufanyun/hotgo/blob/269b2f9e435cf8ff6b18d53bc053a905f4e02d11/server/internal/model/input/sysin/sms\_log.go](https://github.com/bufanyun/hotgo/blob/269b2f9e435cf8ff6b18d53bc053a905f4e02d11/server/internal/model/input/sysin/sms_log.go)
- [https://github.com/bufanyun/hotgo/commit/cb57056c746650e6ff86dec1e97d404b63dcfd30](https://github.com/bufanyun/hotgo/commit/cb57056c746650e6ff86dec1e97d404b63dcfd30)
- [https://github.com/bufanyun/hotgo/issues/240](https://github.com/bufanyun/hotgo/issues/240)
- [https://vul.yulun.ac.cn/20261102/hotgo/](https://vul.yulun.ac.cn/20261102/hotgo/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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