Vulnerability · Published Aug 27, 2026 · Assigned by VulnCheck

CVE-2026-81679OpenRemote before 1.28.0 Cross-Realm Information Disclosure via Notification API

High 7.7

In plain English

A high-severity information exposure in openremote from openremote. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.4%top 66.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
openremote	openremote	0 – before 1.28.0

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

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