CVE-2026-28766

| EUVD-2026-18839 CRITICAL
2026-04-03 icscert GHSA-m7jc-wgg6-fhj3
9.2
CVSS 4.0
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CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
EUVD ID Assigned
Apr 03, 2026 - 20:45 euvd
EUVD-2026-18839
Analysis Generated
Apr 03, 2026 - 20:45 vuln.today
CVE Published
Apr 03, 2026 - 20:20 nvd
CRITICAL 9.2

Tags

Authentication Bypass

Description

A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication.

Analysis

Unauthenticated access to complete user account data in Gardyn Cloud API allows remote attackers to retrieve sensitive information for all registered users. The vulnerability stems from an unprotected endpoint exposing full account details without authentication checks (CVSS 9.2, AV:N/PR:N). …

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Remediation

Within 24 hours: Isolate affected Gardyn Cloud API instances from production networks and disable external access; notify legal and compliance teams of data exposure risk. Within 7 days: Implement network-level access controls (IP whitelisting, WAF rules) to restrict API endpoint access pending vendor patch; conduct data exposure assessment to identify what customer records were accessed. …

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Priority Score

46
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +46
POC: 0

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CVE-2026-28766 vulnerability details – vuln.today
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