CVE-2026-94382 json
Beszel before 0.19.0 Insecure Direct Object Reference via user-alerts
published 2026-09-21 49 d ago modified 2026-09-23 46 d ago also EUVD-2026-83909
- cvss
- 4.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
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.
Patch / fix
- henrygd beszel 0.19.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 49 d ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/henrygd/beszel/security/advisories/GHSA-759g-ch5m-2gch referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 2.3 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 4.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N |
| CNA | 4.0 | 2.3 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- henrygd beszel
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
github.com
/henrygd/beszel/commit/6f92b9396dfbacaf71c20444d175af78e0517409
patch
-
github.com
/henrygd/beszel/security/advisories/GHSA-759g-ch5m-2gch
vendor-advisory, exploit
-
github.com
/henrygd/beszel/blob/v0.18.8/internal/alerts/alerts_api.go#L19-L80
technical-description
-
github.com
/henrygd/beszel/releases/tag/v0.19.0
release-notes
-
github.com
/henrygd/beszel
product
-
vulncheck.com
/advisories/beszel-before-0.19.0-insecure-direct-object-reference-via-user-alerts
third-party-advisory
Sources
- CVE List CVE-2026-94382
- NVD CVE-2026-94382
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.