OS Command Injection in Dromara Mayfly-go Product
CVE-2026-92993

5.3MEDIUM

Key Information:

Vendor

Dromara

Status
Mayfly-go
Vendor
CVE Published:
17 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-92993?

A vulnerability exists in the Dromara Mayfly-go product, specifically within the RunMachineScript function located in server/internal/machine/api/machine_script.go. This vulnerability can be exploited through argument manipulation, resulting in OS command injection. The exploitation of this flaw does not require administrative privileges, allowing any user with the machine:script:run permission and access to certain tags to execute arbitrary commands on affected machines. This includes those using templates with {{.param}} placeholders. The SSH execution layer (Cli.Run) fails to filter input correctly, raising serious security concerns. Despite being contacted regarding this issue, the vendor has not provided any input.

Affected Version(s)

mayfly-go 1.11.0

mayfly-go 1.11.1

mayfly-go 1.11.2

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-2026-92993 - Proof of Concept

References

https://vuldb.com/vuln/406447
vdb-entrytechnical-description
https://vuldb.com/vuln/406447/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-92993
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Guyuelanmin (VulDB User)
VulDB CNA Team
.