CVE-2025-54872: VESSEL9817 Onion-Site-Template

High severity, CVSS 8.7. EPSS: 0.3% chance of exploitation in the next 30 days.

onion-site-template is a complete, scalable tor hidden service self-hosting sample. Versions which include commit 3196bd89 contain a baked-in tor image if the secrets were copied from an existing onion domain. A website could be compromised if a user shared the baked-in image, or if someone were able to acquire access to the user's device outside of a containerized environment. This is fixed by commit bc9ba0fd.

Affected products

• VESSEL9817 Onion-Site-Template: from 3196bd896fed58306d42cc9f4c1e0760e8c829c9, before bc9ba0fd8cc7fbb3abc6759b351885a4501bce84 (fixed in bc9ba0fd8cc7fbb3abc6759b351885a4501bce84)

Published 2025-08-06. Last modified 2026-06-17.