CVE-2026-25599 Missing authentication and clear‑text data transmission affecting Orca heat pumps
Attackers can inject malicious code into the Orca user portal via unauthenticated heat pump devices, leading to cookie theft and account compromise.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-25599?
CVE-2026-25599 is a medium-severity cross-site scripting vulnerability in Orca heat pump, published on 1 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Which versions are affected by CVE-2026-25599?
How do I fix CVE-2026-25599?
No fix has been published for CVE-2026-25599 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-25599 being exploited?
There is no known exploitation of CVE-2026-25599 in the wild and no public exploit code.
Sources
Also known as GHSA-m272-v6vr-r4ff.