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Fencer Vulns
medium 5.4

CVE-2026-54477 json

Gardyn IoT Hub Improper Neutralization of HTTP Headers for Scripting Syntax

published 2026-07-02 4 mo ago modified 2026-07-06 4 mo ago also EUVD-2026-41466

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

Summary

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

Patch / fix

  • Gardyn Gardyn Home Firmware master.627
  • Gardyn Gardyn Studio Firmware master.627
  • Gardyn Gardyn Cloud API 2.12.2026

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-183-03 updated cvss 5.4

Gardyn IoT Hub

  • Gardyn Cloud API <2.12.2026 Gardyn Home Firmware <master.627 Gardyn Studio Firmware <master.627
    affected: mitigation “Gardyn states that IoT Hub deployed infrastructure has been updated to fix the listed vulnerabilities.” mygardyn.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
4 mo ago

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CNA 4.0 5.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CNA 4.0 5.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Gardyn Gardyn Home Firmware
  • Gardyn Gardyn Studio Firmware
  • Gardyn Gardyn Cloud API

Classification

Weakness
  • CWE-644 Improper Neutralization of HTTP Headers for Scripting Syntax

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.