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TI-2026-83839 Aliases CVE-2026-120447GHSA-c3f7-678j-f69g

HotGo Authentication Bypass via Client-Set SMS Verification Code

Priority HIGH 75CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

HotGo from 2.8.4 through 2.15.1 contains an authentication bypass (CWE-287). The SMS login flow accepts a verification code supplied by the client, so an unauthenticated remote attacker who knows a user's mobile number can set the code and log in to take over accounts, including administrator accounts. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00531 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
bufanyunHotGo2.8.4 – 2.15.1—No fix listedCNA
  • HotGo Vendorbufanyun Affected 2.8.4 – 2.15.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for HotGo.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-120447
  2. 2026-11-02 Alias added: GHSA-c3f7-678j-f69g
  3. 2026-11-02 Title updated · CNA
  4. 2026-11-02 Affected versions changed · CNA
  5. 2026-11-06 CISA SSVC decision points changed
  6. 2026-11-06 Priority changed: MEDIUM → HIGH

References

Exploit 1

Patch 1

Other 3

  • TI-2026-03178 bufanyun HotGo Endpoint upload.go ImageTransferStorage server-side request forgery CVSS 4.0MEDIUM 5.3
  • TI-2026-04588 bufanyun HotGo editNotice Endpoint MessageList.vue cross site scripting CVSS 4.0MEDIUM 5.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences