Information disclosure in Openremote
CVE-2026-81679
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/openremote/openremote/security/advisories/GHSA-6ff4-4frc-r287 (vendor-advisory)
- www.vulncheck.com/advisories/openremote-before-1.28.0-cross-realm-information-d… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-81679?
- CVE-2026-81679 is a high-severity vulnerability in Openremote, classified under Information Disclosure. CVSS score: 7.7/10. Published 2026-08-27.
- How severe is CVE-2026-81679?
- High severity. CVSS v3 base score is 7.7 out of 10.