Foreman WebSocket Proxy Hostname command injection

Summaryinfo

A vulnerability labeled as critical has been found in Foreman. Affected is an unknown function of the component WebSocket Proxy. Such manipulation of the argument Hostname leads to command injection. This vulnerability is traded as CVE-2026-1961. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Foreman (the affected version unknown). Affected by this issue is an unknown part of the component WebSocket Proxy. The manipulation of the argument hostname with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A flaw was found in Foreman. A remote attacker could exploit a command injection vulnerability in Foreman's WebSocket proxy implementation. This vulnerability arises from the system's use of unsanitized hostname values from compute resource providers when constructing shell commands. By operating a malicious compute resource server, an attacker could achieve remote code execution on the Foreman server when a user accesses VM VNC console functionality. This could lead to the compromise of sensitive credentials and the entire managed infrastructure.

The advisory is available at access.redhat.com. This vulnerability is handled as CVE-2026-1961 since 02/05/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/01/2026). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

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

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-0912). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• Open Source Foreman

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Type

• Service Management Software

Name

• Foreman

License

• open-source

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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