patrickhener goshs 2.0.0-beta.4/2.0.0-beta.5 Request Header information disclosure

Summaryinfo

A vulnerability has been found in patrickhener goshs 2.0.0-beta.4/2.0.0-beta.5 and classified as problematic. This issue affects some unknown processing of the component Request Header Handler. The manipulation leads to information disclosure. This vulnerability is documented as CVE-2026-40885. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in patrickhener goshs 2.0.0-beta.4/2.0.0-beta.5. This issue affects an unknown part of the component Request Header Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

goshs is a SimpleHTTPServer written in Go. From 2.0.0-beta.4 to 2.0.0-beta.5, goshs leaks file-based ACL credentials through its public collaborator feed when the server is deployed without global basic auth. Requests to .goshs-protected folders are logged before authorization is enforced, and the collaborator websocket broadcasts raw request headers, including Authorization. An unauthenticated observer can capture a victim's folder-specific basic-auth header and replay it to read, upload, overwrite, and delete files inside the protected subtree. This vulnerability is fixed in 2.0.0-beta.6.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-40885 since 04/15/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 2.0.0-beta.6 eliminates this vulnerability.

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Productinfo

Vendor

• patrickhener

Name

• goshs

Version

• 2.0.0-beta.4
• 2.0.0-beta.5

Website

• Product: https://github.com/patrickhener/goshs/

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