CVE-2026-28766 | Gardyn Cloud API prior 2.12.2026 Account Information missing authentication (icsa-26-055-03)

VDB-355209 · CVE-2026-28766 · ICSA-26-055-03 GARDYN CLOUD API PRIOR 2.12.2026 ACCOUNT INFORMATION MISSING AUTHENTICATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.2 $0-$5k 0.69 Summaryinfo A vulnerability, which was classified as critical, has been found in Gardyn Cloud API. This affects an unknown function of the component Account Information Handler. Performing a manipulation results in missing authentication. This vulnerability is cataloged as CVE-2026-28766. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component. Detailsinfo A vulnerability was found in Gardyn Cloud API. It has been classified as critical. This affects an unknown functionality of the component Account Information Handler. The manipulation with an unknown input leads to a missing authentication vulnerability. CWE is classifying the issue as CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. This is going to have an impact on confidentiality. The summary by CVE is: A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication. The weakness was shared by Michael Groberman as icsa-26-055-03. The advisory is shared at cisa.gov. This vulnerability is uniquely identified as CVE-2026-28766 since 03/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. Upgrading to version 2.12.2026 eliminates this vulnerability. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-18839). Productinfo Type Cloud Software Vendor Gardyn Name Cloud API CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 7.3 VulDB Meta Temp Score: 7.2 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 9.3 CNA Vector (icscert): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Missing authentication CWE: CWE-306 / CWE-287 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Cloud API 2.12.2026 Timelineinfo 03/17/2026 CVE reserved 04/03/2026 +16 days Advisory disclosed 04/03/2026 +0 days VulDB entry created 04/04/2026 +1 days VulDB entry last update Sourcesinfo Advisory: icsa-26-055-03 Researcher: Michael Groberman Status: Confirmed CVE: CVE-2026-28766 (🔒) GCVE (CVE): GCVE-0-2026-28766 GCVE (VulDB): GCVE-100-355209 EUVD: 🔒 Entryinfo Created: 04/03/2026 23:30 Updated: 04/04/2026 02:37 Changes: 04/03/2026 23:30 (78), 04/04/2026 02:37 (1) Complete: 🔍 Cache ID: 99:13D:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸