CVE-2026-94382

Beszel before 0.19.0 Insecure Direct Object Reference via user-alerts

MEDIUM
4.2
CVSS Score
Published: September 21, 2026 at 12:59 PM UTC
Updated: September 23, 2026 at 05:30 PM UTC
1 product affected across 1 vendorBeszel

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Severity
MEDIUM4.2
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

Beszel before 0.19.0 contains an insecure direct object reference vulnerability in the POST and DELETE /api/beszel/user-alerts handlers that allows any authenticated user to create or delete alerts on systems they cannot access. Attackers can supply arbitrary system IDs in the request body to register alert rules and receive notifications disclosing target system names and metrics.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.19.0
Vendor states this is fixed in 0.19.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.2MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-639

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