Vulnerability · Published Sep 10, 2026 · Assigned by GitHub_M
CVE-2026-54054Transmute has full-read SSRF in URL file import (POST /api/files/url) — no host/IP validation, follows redirects
Medium 6.5
In plain English
A medium-severity server-side request forgery in transmute from transmute-app. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| transmute-app | transmute | < 1.3.0 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://github.com/transmute-app/transmute/security/advisories/GHSA-89m5-mvmx-7xrf x_refsource_CONFIRM
- https://github.com/transmute-app/transmute/releases/tag/v1.3.0 x_refsource_MISC