CVE-2026-81679

OpenRemote before 1.28.0 Cross-Realm Information Disclosure via Notification API

State: Published
Severity: 8.3 High
Published: Aug 27, 2026
Updated: Oct 8, 2026
Reserved: Aug 27, 2026

Description

OpenRemote versions before 1.28.0 contain a cross-realm information disclosure vulnerability in the Notification REST API that allows per-realm tenant administrators to read all tenants' sent notifications including message bodies. Attackers with read:admin credentials in one realm can submit a zero-parameter GET request to the notification endpoint to retrieve sensitive notification metadata and message content from all realms.

Scores

CVSS	Score	Vector	Source
4.0	8.3 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N	VulnCheck
3.1	7.7 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N	VulnCheck

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
openremoteopenremote	before 1.28.0Affected 1.28.0Not affected

References

GitHub Security Advisory (GHSA-6ff4-4frc-r287)vendor-advisory
VulnCheck Advisory: OpenRemote before 1.28.0 Cross-Realm Information Disclosure via Notification APIthird-party-advisory

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