Vulnerability · Published Jun 1, 2026 · Assigned by ENISA
CVE-2026-25599Missing authentication and clear‑text data transmission affecting Orca heat pumps
Medium 6.3
In plain English
A medium-severity cross-site scripting in Orca heat pump from Orca Energy. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Official description
Missing authentication and clear‑text transmission of data from the heat pumps to the control server, combined with the absence of input validation on aggregated data, can lead to stored XSS that enables theft of cookies from the pump’s web control interface. Older Orca heat pump devices communicating with the Orca server over an unencrypted and unauthenticated HTTP connection on a non-secure port specifically enable an attacker to impersonate a legitimate device and inject malicious payloads. This enables the insertion of harmful code directly into the Orca user portal, potentially compromising user accounts, exposing sensitive information, and allowing further unauthorized actions within the portal.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Orca Energy | Orca heat pump | 0 – before 2.1.0 |
| Orca Energy | Orca user portal | 0 – before 1.19 |
Weakness: CWE-79, CWE-306, CWE-319 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L