CVE-2026-54640

OpenRemote: XXE in KNXProtocol.startAssetImport() allows arbitrary file read via unprotected XMLInputFactory

CVSS score

7.6

EPSS probability

—

Risk score

0.8

Published

20 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.

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Vulnerability description

CVE AI research

The stored explanation is shown at once; refreshing evaluates the sources again.

DayBreach AI Explanation

Verified against sources

XML External Entity Vulnerability in OpenRemote

Sources read

Source agreement

Tam uyum

Evidence confidence

%71

Short explanation

OpenRemote contains an XML external entity injection vulnerability in the KNXProtocol.startAssetImport method that allows an authenticated user to read arbitrary files.

Why does it matter?

This vulnerability enables an authorized user to read files accessible to the JVM process or trigger server-side requests.

What should be done?

Upgrade to version 1.24.2 or above

Chain of evidence and sources3 verified claims

OpenRemote 1.24.2 öncesi sürümlerde KNXProtocol.startAssetImport yöntemi, harici varlık çözümlemesine izin veren ayrıştırıcılar kullanmaktadır.

S0 · daybreach-canonical S1 · cvelist S2 · nvd

Bu açık, CVE-2026-40882 için yapılan eksik bir düzeltmeden kaynaklanmaktadır ve KNX işleyicisi savunmasız bırakılmıştır.

S0 · daybreach-canonical S1 · cvelist S2 · nvd S3 · gitlab

Zaafiyet 1.24.2 sürümünde giderilmiştir.

S0 · daybreach-canonical S1 · cvelist S2 · nvd S3 · gitlab

Show the technical text from the sources

OpenRemote is an open-source internet-of-things platform. Prior to 1.24.2, the KNXProtocol.startAssetImport method in agent/src/main/java/org/openremote/agent/protocol/knx/KNXProtocol.java processes 0.xml from an authenticated user's uploaded ETS project ZIP with Saxon TransformerFactoryImpl and XMLInputFactory parsers that permit external entity resolution. This incomplete remediation of CVE-2026-40882 leaves the KNX handler unprotected while the parallel Velbus handler is hardened, allowing a regular realm user to read files accessible to the JVM process or cause server-side requests. This issue is fixed in version 1.24.2.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

CWE: CWE-611, CWE-937, CWE-1035

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-54640 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	openremote	openremote	View
2	io.openremote	openremote-manager	View
3	maven	io.openremote/openremote-agent	View

Total affected vendors: 3|Products: 3

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
7.6	CVSS V3_1	HIGH	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L	CVE CNA
7.6	CVSS V31	HIGH	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L	NVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

1 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

gitlabmaven/io.openremote/openremote-agent1.24.2

GitLab Advisory düzeltilmiş sürüm: 1.24.2

gitlab

Upgrade to version 1.24.2 or above.

canonical

Upgrade to version 1.24.2 or above.

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Apply the official update named in the evidence only to the matching product and version.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-54640 is associated with the following CWEs:

CWE-611: Common Weakness Enumeration Entry CWE-611 CWE-937: Common Weakness Enumeration Entry CWE-937 CWE-1035: Common Weakness Enumeration Entry CWE-1035

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-54640 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsLow

UserGerekmiyor

Official Sources and Advisories

https://github.com/openremote/core/security/advisories/GHSA-7v6w-c3f4-9wpqvendor-advisory https://github.com/openremote/core/commit/c28d3c60ebc2da68d9b6c4a6d7a5ad875a255ee9vendor-advisory https://github.com/openremote/core/releases/tag/1.24.2vendor-advisory https://nvd.nist.gov/vuln/detail/CVE-2026-54640vendor-advisory https://github.com/advisories/GHSA-7v6w-c3f4-9wpqvendor-advisory https://github.com/openremote/openremote/security/advisories/GHSA-7v6w-c3f4-9wpqvendor-advisory https://github.com/openremote/openremote/commit/c28d3c60ebc2da68d9b6c4a6d7a5ad875a255ee9vendor-advisory

CVSS Vector Radar Chart

7.6 / 10

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow privileges

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)Low

Yama doğrulandı

1 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

openremote

io.openremote

maven

Weakness Type (CWE & CAPEC)

CWE-611 CWE-937 CWE-1035

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