jmpsec osctrl up to 0.4.x osctrl-admin os command injection

Summaryinfo

A vulnerability was found in jmpsec osctrl up to 0.4.x and classified as critical. Affected is an unknown function. The manipulation of the argument osctrl-admin results in os command injection. This vulnerability is reported as CVE-2026-28279. The attacker must have access to the local network to execute the attack. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in jmpsec osctrl up to 0.4.x. It has been classified as problematic. Affected is an unknown code. The manipulation of the argument osctrl-admin with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

osctrl is an osquery management solution. Prior to version 0.5.0, an OS command injection vulnerability exists in the `osctrl-admin` environment configuration. An authenticated administrator can inject arbitrary shell commands via the hostname parameter when creating or editing environments. These commands are embedded into enrollment one-liner scripts generated using Go's `text/template` package (which does not perform shell escaping) and execute on every endpoint that enrolls using the compromised environment. An attacker with administrator access can achieve remote code execution on every endpoint that enrolls using the compromised environment. Commands execute as root/SYSTEM (the privilege level used for osquery enrollment) before osquery is installed, leaving no agent-level audit trail. This enables backdoor installation, credential exfiltration, and full endpoint compromise. This is fixed in osctrl `v0.5.0`. As a workaround, restrict osctrl administrator access to trusted personnel, review existing environment configurations for suspicious hostnames, and/or monitor enrollment scripts for unexpected commands.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-28279 since 02/26/2026. The exploitability is told to be difficult. The attack needs to be initiated within the local network. Additional levels of successful authentication are required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 0.5.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-8922). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• jmpsec

Name

• osctrl

Version

• 0.1
• 0.2
• 0.3
• 0.4

Website

• Product: https://github.com/jmpsec/osctrl/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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