XML external entity flaw in OpenRemote KNX import exposes files
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
OpenRemote before 1.24.2 is affected. The KNX protocol handler parses the 0.xml file of an uploaded ETS project ZIP with XML parsers that resolve external entities (CWE-611). A regular user with low privileges can read files the JVM process can access or make server-side requests by uploading a crafted project.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| openremote | openremote | before 1.24.2 | 1.24.2 | Patch available | CNA |
| io.openremote | openremote-manager | before 1.24.2 | 1.24.2 | Patch available | CNA |
| — | io.openremote:openremote-agent (Maven) | before 1.24.2 | 1.24.2 | Patch available | GHSA-7v6w-c3f4-9wpq |
- openremote Vendoropenremote Affected before 1.24.2 Fixed in 1.24.2 Patch available CNA
- openremote-manager Vendorio.openremote Affected before 1.24.2 Fixed in 1.24.2 Patch available CNA
- io.openremote:openremote-agent (Maven) Vendor— Affected before 1.24.2 Fixed in 1.24.2 Patch available GHSA-7v6w-c3f4-9wpq
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openremote:openremote:*:*:*:*:*:*:*:* | — | — | openremote |
- cpe:2.3:a:openremote:openremote:*:*:*:*:*:*:*:* Versions — — ·openremote
Remediation
Update io.openremote:openremote-agent to version 1.24.2. The sources list no fixed version for openremote. The sources list no fixed version for openremote-manager.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
- Fix · CNA openremote (openremote) Fixed in 1.24.2
- Fix · CNA openremote-manager (io.openremote) Fixed in 1.24.2
- Fix · GHSA-7v6w-c3f4-9wpq io.openremote:openremote-agent (Maven) Fixed in 1.24.2 Advisory →
Timeline
- 2026-10-13 Threatist record created from CVE-2026-54640
- 2026-10-13 CISA SSVC decision points changed
- 2026-10-13 Priority changed: MEDIUM → LOW
References
Other 6
- https://github.com/openremote/core/security/advisories/GHSA-7v6w-c3f4-9wpq
- https://github.com/openremote/core/commit/c28d3c60ebc2da68d9b6c4a6d7a5ad875a255ee9
- https://github.com/openremote/core/releases/tag/1.24.2
- https://github.com/openremote/openremote/security/advisories/GHSA-7v6w-c3f4-9wpq
- https://github.com/openremote/openremote/commit/c28d3c60ebc2da68d9b6c4a6d7a5ad875a255ee9
- https://github.com/openremote/openremote
More openremote vulnerabilities
- TI-2022-13714 An issue was discovered in OpenRemote through 1.0.4 allows attackers to execute arbitrary… CVSS 3.1CRITICAL 9.8
- TI-2026-28724 OpenRemote is Vulnerable to Expression Injection CVSS 3.1CRITICAL 10.0
- TI-2026-79160 Missing authorization in OpenRemote gateway tunnel endpoints CVSS 4.0CRITICAL 9.0
- TI-2026-40948 OpenRemote < 1.25.0 IDOR via Bulk Alarm Deletion Endpoint CVSS 4.0HIGH 8.6
- TI-2026-71893 OpenRemote: Cross-Realm User Information Disclosure in UserResourceImpl CVSS 3.1HIGH 7.7
- TI-2026-29790 OpenRemote has Improper Access Control via updateUserRealmRoles function CVSS 3.1HIGH 7.0
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences