alexandre-daubois Ember up to 1.4.1 Formatters View neutralization

Summaryinfo

A vulnerability identified as problematic has been detected in alexandre-daubois Ember up to 1.4.1. This affects the function View of the component Formatters. Performing a manipulation results in neutralization. This vulnerability is cataloged as CVE-2026-54162. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in alexandre-daubois Ember up to 1.4.1. It has been classified as problematic. This affects the function View of the component Formatters. The manipulation with an unknown input leads to a neutralization vulnerability. CWE is classifying the issue as CWE-707. The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read from an upstream component or sent to a downstream component. This is going to have an impact on integrity. The summary by CVE is:

Ember is a real-time terminal dashboard for Caddy servers with FrankenPHP support. Prior to 1.4.2, interactive TUI row formatters pass Caddy access-log fields, particularly the request URI, through the `fitCellLeft` render helper without neutralizing terminal escape or control sequences. An unauthenticated remote client can place ANSI, OSC, or CSI control bytes in an ordinary HTTP request target. Caddy JSON-escapes those bytes, `ParseLogLine` decodes them back into raw controls, and the formatters concatenate them into `View()` output reaching `os.Stdout`. When the operator views the default `Logs` tab, the terminal interprets these sequences, allowing monitoring-dashboard spoofing, clipboard hijacking through `OSC 52`, and window-title spoofing through `OSC 0/2`. This works even with a loopback-only log listener because the input arrives through normal Caddy access logs. `Certificates` and `Routes` share secondary unneutralized render sinks. The `--json`, `--once`, and daemon `--expose` modes are unaffected because they do not render an interactive terminal. Consequences depend on the terminal emulator and usually require further operator action to escalate; this is not general-purpose remote code execution. This issue is fixed in version 1.4.2.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-54162 since 06/11/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.4.2 eliminates this vulnerability.

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Productinfo

Vendor

• alexandre-daubois

Name

• Ember

Version

• 1.4.0
• 1.4.1

Website

• Product: https://github.com/alexandre-daubois/ember/

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