Is CVE-2026-27734 actively exploited?

No active exploitation of CVE-2026-27734 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-27734 be exploited remotely?

Yes. CVE-2026-27734 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-27734?

CVE-2026-27734 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-27734

CWE-22Published: February 27, 2026· Updated: Mar 4, 2026

6.5

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:3.5th

Official Description

Beszel is a server monitoring platform. Prior to version 0.18.2, the hub's authenticated API endpoints GET /api/beszel/containers/logs and GET /api/beszel/containers/info pass the user-supplied "container" query parameter to the agent without validation. The agent constructs Docker Engine API URLs using fmt.Sprintf with the raw value instead of url.PathEscape(). Since Go's http.Client does not sanitize `../` sequences from URL paths sent over unix sockets, an authenticated user (including readonly role) can traverse to arbitrary Docker API endpoints on agent hosts, exposing sensitive infrastructure details. Version 0.18.4 fixes the issue.

NVD Source

Technical Analysis

CVE-2026-27734 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.