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Vulnerability record · CVE-2026-81679 · published 27 August 2026

CVE-2026-81679: Information exposure vulnerability

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.

8.3 CVSS 4.0 High EPSS 0.39% · top 69.3% CWE-200 · Information exposure Deferred
8.3CVSS 4.0 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
23 Sep 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/openremote/openremote/security/advisories/GHSA-6ff4-4frc-r287
https://www.vulncheck.com/advisories/openremote-before-1.28.0-cross-realm-information-disclosure-via-notification-api

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Source: NIST National Vulnerability Database (record CVE-2026-81679), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.