CVE-2026-67310Public exploitNetwork attack vector

Cross-tenant link persistence via partial realm validation

Published Aug 1, 2026 · Updated Aug 1, 2026

Incorrect authorization in OpenRemote 1.26.2 and earlier allows remote authenticated users to persist cross-tenant alarm-asset links. AlarmResourceImpl.setAssetLinks checks only realms.stream().findFirst() from the request's HashSet before alarmService.linkAssets() persists every submitted link. Remote authenticated users with alarm-link access can retry mixed-realm requests until their realm is checked first, then read victim asset names through their own alarm.

CVSS severity5.3
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in OpenRemote 1.26.2 and earlier allows remote authenticated users to persist cross-tenant alarm-asset links. AlarmResourceImpl.setAssetLinks checks only realms.stream().findFirst() from the request's HashSet before alarmService.linkAssets() persists every submitted link. Remote authenticated users with alarm-link access can retry mixed-realm requests until their realm is checked first, then read victim asset names through their own alarm.

The record

CVE
CVE-2026-67310
Published
Aug 1, 2026
Updated
Aug 1, 2026
Vendor
OpenRemote
Product
OpenRemote
Classifications
CWE-863, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.27.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenRemote · OpenRemoteversion=0 <1.27.0

Published CVSS scores

5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
5.4OpenRemoteCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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