CVE-2026-25760: Website Path Traversal / Arbitrary File Read (Authenticated) in Sliver

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-06 · updated 2026-06-17
Weakness: CWE-22

Description

Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to 1.6.11, a path traversal in the website content subsystem lets an authenticated operator read arbitrary files on the Sliver server host. This is an authenticated path traversal / arbitrary file read issue, and it can expose credentials, configs, and keys. This vulnerability is fixed in 1.6.11.

Affected products

BishopFox sliver: before 1.6.11 — fixed in 1.6.11

How to fix

Upgrade to a fixed version: BishopFox sliver 1.6.11. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2026-25760 or the next vulnerability affects your stack