---
id: CVE-2026-54054
title: >-
  Transmute has full-read SSRF in URL file import (POST /api/files/url) — no
  host/IP validation, follows redirects
summary: >-
  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 …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-918
vendor: transmute-app
product: transmute
affected:
  - transmute < 1.3.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-11T16:35:27.661774Z'
published: '2026-09-10'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T16:35:35.491Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-54054'
references:
  - url: >-
      https://github.com/transmute-app/transmute/security/advisories/GHSA-89m5-mvmx-7xrf
    label: >-
      https://github.com/transmute-app/transmute/security/advisories/GHSA-89m5-mvmx-7xrf
  - url: 'https://github.com/transmute-app/transmute/releases/tag/v1.3.0'
    label: 'https://github.com/transmute-app/transmute/releases/tag/v1.3.0'
tags:
  - cve.org
epss: 0.00354
epssPercentile: 0.26397
ingestedAt: '2026-09-11T18:53:56.562Z'
---

## Overview

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

- `transmute < 1.3.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.