Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2026-40077 Details

Description

Beszel is a server monitoring platform. Prior to 0.18.7, some API endpoints in the Beszel hub accept a user-supplied system ID and proceed without further checks that the user should have access to that system. As a result, any authenticated user can access these routes for any system if they know the system's ID. System IDs are random 15 character alphanumeric strings, and are not exposed to all users. However, it is theoretically possible for an authenticated user to enumerate a valid system ID via web API. To use the containers endpoints, the user would also need to enumerate a container ID, which is 12 digit hexadecimal string. This vulnerability is fixed in 0.18.7.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:3.1 LOWVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

CNA: [email protected]CVSS-B:3.5 LOWVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://github.com/henrygd/beszel/releases/tag/v0.18.7	[email protected]	ProductRelease Notes
https://github.com/henrygd/beszel/security/advisories/GHSA-5f5r-95pg-xrpm	[email protected]	ExploitVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-184	Incomplete List of Disallowed Inputs	[email protected]

Affected Products

Product	Versions
beszel beszel	< 0.18.7
CPE cpe:2.3:a:beszel:beszel:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Apr 17, 2026	Initial Analysis	[email protected]
Apr 9, 2026	New CVE Received	[email protected]