transmute-app Transmute up to 1.2.x URL Import Endpoint /api/files/url server-side request forgery

Summaryinfo

A vulnerability was found in transmute-app Transmute up to 1.2.x. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the file /api/files/url of the component URL Import Endpoint. The manipulation leads to server-side request forgery. This vulnerability is documented as CVE-2026-54054. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in transmute-app Transmute up to 1.2.x. It has been rated as problematic. This issue affects an unknown code block of the file /api/files/url of the component URL Import Endpoint. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality. The summary by CVE is:

Transmute is a free, open-source, self-hosted file conversion and compression tool. Prior to version 1.3.0, Transmute's URL import endpoint, `POST /api/files/url`, is vulnerable to Server-Side Request Forgery (SSRF). The HTTP downloader used by this endpoint fetches user-supplied URLs with redirects enabled and does not validate whether the target resolves to a public, external address. As a result, an authenticated user (or guest user if they are enabled) may be able to cause the Transmute server to make HTTP requests to internal or cloud-local resources from the server's network position. Because downloaded content is stored and can later be retrieved through `GET /api/files/{id}`, this issue can result in full-read SSRF rather than blind SSRF. This is fixed in version 1.3.0.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-54054 since 06/11/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available.

Upgrading to version 1.3.0 eliminates this vulnerability.

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Productinfo

Vendor

• transmute-app

Name

• Transmute

Version

• 1.0
• 1.1
• 1.2

Website

• Product: https://github.com/transmute-app/transmute/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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