CVE-2026-40077

LOW EPSS 12.4%
Published Apr 9, 20262mo ago · Modified Jun 17, 20261w ago
3.1 CVSS 3.1
Low
Find Similar
Published Apr 9, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
3.1
Exploitability
1.6
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
12.4% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-184

Affected Products 1

VendorProductVersionRange
beszelbeszel* <0.18.7

References 2

  • github.com https://github.com/henrygd/beszel/releases/tag/v0.18.7
    ProductRelease Notes
  • github.com https://github.com/henrygd/beszel/security/advisories/GHSA-5f5r-95pg-xrpm
    ExploitVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.