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beszel

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CNA

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Related CVEsRelated VendorsRelated AssignersReports
1Vulnerabilities found
CVE-2026-27734
Assigner-GitHub, Inc.
ShareView Details
Assigner-GitHub, Inc.
CVSS Score-6.5||MEDIUM
EPSS-Not Assigned
Published-27 Feb, 2026 | 19:41
Updated-27 Feb, 2026 | 20:21
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Beszel Vulnerable to Docker API Path Traversal via Unsanitized Container ID

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.

Action-Not Available
Vendor-henrygd
Product-beszel
CWE ID-CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')