CVE-2026-54477: Gardyn IoT Hub Improper Neutralization of HTTP Headers for Scripting Syntax

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-03 · updated 2026-07-06
Weakness: CWE-644

Description

The admin panel lacks standard security headers, enabling clickjacking and cross-site scripting attacks.

Affected products

Gardyn Cloud API: before 2.12.2026 — fixed in 2.12.2026
Gardyn Home Firmware: before master.627 — fixed in master.627
Gardyn Studio Firmware: before master.627 — fixed in master.627

How to fix

Upgrade to a fixed version: Gardyn Cloud API 2.12.2026; Gardyn Home Firmware master.627; Gardyn Studio Firmware master.627. Check the vendor advisory for mitigations.

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-183-03.json
https://mygardyn.com/security/
https://www.cisa.gov/news-events/ics-advisories/icsa-26-183-03

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