CVE-2026-94382

MEDIUM 4.2

Beszel before 0.19.0 Insecure Direct Object Reference via user-alerts

CVSS Score

4.2

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-639
Vendor	henrygd
Product	beszel
Published	Sep 21, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

henrygd / beszel

0 < 0.19.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/henrygd/beszel/security/advisories/GHSA-759g-ch5m-2gch github.com: https://github.com/henrygd/beszel/commit/6f92b9396dfbacaf71c20444d175af78e0517409 github.com: https://github.com/henrygd/beszel/blob/v0.18.8/internal/alerts/alerts_api.go#L19-L80 github.com: https://github.com/henrygd/beszel/releases/tag/v0.19.0 github.com: https://github.com/henrygd/beszel vulncheck.com: https://www.vulncheck.com/advisories/beszel-before-0.19.0-insecure-direct-object-reference-via-user-alerts

Credits

Onetatcode DeathXcorE DavidCarliez ka3n1x