Dromara mayfly-go up to 1.11.5 Machine Script Feature machine_script.go RunMachineScript params os command injection

Summaryinfo

A vulnerability classified as critical has been found in Dromara mayfly-go up to 1.11.5. This affects the function RunMachineScript of the file server/internal/machine/api/machine_script.go of the component Machine Script Feature. This manipulation of the argument params causes os command injection. This vulnerability is tracked as CVE-2026-92993. The attack is possible to be carried out remotely. Moreover, an exploit is present. Exploitation needs no admin account. Any account holding machine:script:run plus tag access reaches arbitrary command execution on machines whose templates contain {{.param}} placeholders; the SSH exec layer (Cli.Run) also applies no input filtering to any caller. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Dromara mayfly-go up to 1.11.5. It has been declared as critical. Affected by this vulnerability is the function RunMachineScript of the file server/internal/machine/api/machine_script.go of the component Machine Script Feature. The manipulation of the argument params with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.

It is possible to read the advisory at gist.github.com. This vulnerability is known as CVE-2026-92993. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

It is possible to download the exploit at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. Exploitation needs no admin account. Any account holding machine:script:run plus tag access reaches arbitrary command execution on machines whose templates contain {{.param}} placeholders; the SSH exec layer (Cli.Run) also applies no input filtering to any caller.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Dromara

Name

• mayfly-go

Version

• 1.11.0
• 1.11.1
• 1.11.2
• 1.11.3
• 1.11.4
• 1.11.5

Website

• Product: https://github.com/dromara/mayfly-go/

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Submitinfo

Accepted

• Submit #942254: dromara mayfly-go 1.2.11 to 1.11.5 OS Command Injection (by Guyuelanmin)

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