High · CVSS 8.3CVE-2026-81679

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

Answer in brief

CVE-2026-81679 records a High severity (CVSS 8.3) vulnerability in OpenRemote before 1.28.0 Cross-Realm Information Disclosure via Notification API. The current sources do not mark it as known exploited. The current feed maps openremote/openremote (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 27, 2026Updated Oct 8, 2026Source checked Oct 12, 2026First seen by HOL Aug 27, 2026Material review Oct 8, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps openremote/openremote (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
openremote/openremotegeneric	>=0 <1.28.0	1.28.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for openremote/openremote.
Review the reported fix. Update openremote/openremote to 1.28.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 27, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.