CVE-2026-81679

High

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.

SeverityHigh

CVSS7.7

Exploit probability—

ProductOpenremote

PublishedAug 27, 2026

First seenAug 27, 2026

Weakness typeCWE-200Sensitive information exposure

How to fix

Update

openremote openremote1.28.0 or later

Vendor advisories

github.com/openremote/openremote/security/advisories/GHSA-6ff4-4frc-r287

Affected products

Product	Affected versions	Fixed in
openremote openremote	v < 1.28.0	1.28.0

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