TI-2026-63405 Aliases CVE-2026-94382 GHSA-x7pw-mf2h-rgr4

Beszel before 0.19.0 Insecure Direct Object Reference via user-alerts

MEDIUM 45CWE-639Published 2026-09-21 · Updated 2026-09-21

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: Security bypass
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00305 23rd percentileScored 2026-11-07

Fix Fixed beszel (henrygd): 0.19.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
henrygd	beszel	before 0.19.0	0.19.0	Patch available	CNA

beszel Vendorhenrygd Affected before 0.19.0 Fixed in 0.19.0 Patch available CNA

Remediation

Fix · CNA beszel (henrygd) Fixed in 0.19.0

Timeline

2026-10-02 Threatist record created from CVE-2026-94382
2026-10-03 Alias added: GHSA-x7pw-mf2h-rgr4

References

Patch 1

Patch Commit

Advisory 1

GitHub Security Advisory (GHSA-759g-ch5m-2gch)

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences