CVE-2026-34227
HIGHSliver One-Click Remote Access: Insecure CORS & Unauthenticated MCP Interface
Title source: cnaDescription
Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to version 1.7.4, a single click on a malicious link gives an unauthenticated attacker immediate, silent control over every active C2 session or beacon, capable of exfiltrating all collected target data (e.g. SSH keys, ntds.dit) or destroying the entire compromised infrastructure, entirely through the operator's own browser. This issue has been patched in version 1.7.4.
Exploits (1)
Scores
CVSS v3
8.8
EPSS
0.0002
EPSS Percentile
5.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-306
CWE-942
Status
published
Products (3)
bishopfox/sliver
< 1.7.4
bishopfox/sliver
0 - 1.7.4Go
BishopFox/sliver
< 1.7.4
Published
Mar 31, 2026
Tracked Since
Mar 31, 2026