CVE-2026-28767 | Gardyn Cloud API up to 2.12.2025 Administrative Endpoint missing authentication (icsa-26-055-03)

VDB-355201 · CVE-2026-28767 · ICSA-26-055-03 GARDYN CLOUD API UP TO 2.12.2025 ADMINISTRATIVE ENDPOINT MISSING AUTHENTICATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.2 $0-$5k 0.48+ Summaryinfo A vulnerability was found in Gardyn Cloud API up to 2.12.2025. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the component Administrative Endpoint. This manipulation causes missing authentication. This vulnerability is handled as CVE-2026-28767. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised. Detailsinfo A vulnerability was found in Gardyn Cloud API up to 2.12.2025. It has been declared as critical. Affected by this vulnerability is an unknown function of the component Administrative Endpoint. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality. The summary by CVE is: A specific administrative endpoint notifications is accessible without proper authentication. The weakness was released by Michael Groberman as icsa-26-055-03. The advisory is shared at cisa.gov. This vulnerability is known as CVE-2026-28767 since 03/17/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. Upgrading to version 2.12.2026 eliminates this vulnerability. Productinfo Type Cloud Software Vendor Gardyn Name Cloud API Version 2.12.2025 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: 5.3 VulDB Meta Temp Score: 5.2 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 5.3 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 04/03/2026 +0 days VulDB entry last update Sourcesinfo Advisory: icsa-26-055-03 Researcher: Michael Groberman Status: Confirmed CVE: CVE-2026-28767 (🔒) GCVE (CVE): GCVE-0-2026-28767 GCVE (VulDB): GCVE-100-355201 Entryinfo Created: 04/03/2026 23:24 Changes: 04/03/2026 23:24 (79) Complete: 🔍 Cache ID: 99:98A:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸