CVE-2026-54054Medium· 6.5▾ Sunlit

Transmute is a free, open-source, self-hosted file conversion and compression tool

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 …

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score36/ 100 · Low

impact 35.8 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Sep 10, 2026

Updated

Sep 30, 2026

CVSS

6.5

Vendor

transmute-app

Product

transmute

CWE

CWE-918

Depth score

36 · Low

EPSS

0.35% · p29

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

decided 2026-09-11

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Sep 11.

0.3% → 0.4%▲ 0.10%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 20 days

Sep 10, 2026Published
Disclosed via NVD
Sep 11, 2026EPSS first tracked
0.3%
Sep 25, 2026EPSS peak
0.3% → 0.4%
Sep 30, 2026Record revised
Last analysed / modified upstream

transmute-app CWE-918 #nvd #cve.org

Affected

transmute < 1.3.0

Full technical detail▾

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.

Remediation

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

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org

← Back to feed