HowToFixMe
● Medium · CVSS 5.3

How to Fix CVE-2026-3594: Exposure of Sensitive Information to an Unauthorized Actor

By Sai Kiran Pandrala · reviewed by Sai Kiran Pandrala, Editor

Last verified: 2026-05-25

⚡ At a glance
SeverityCVSS 5.3, Medium
Actively exploited?No
AffectedImprintnext Riaxe Product Customizer (0 <= 2.4)
Fixed inSee vendor advisory
Type (CWE)CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Exploitation status

CVE-2026-3594 has not (yet) been flagged on the CISA Known Exploited Vulnerabilities catalog; treat that as 'no confirmed exploitation on record', not 'safe to ignore'. Do not wait for a KEV entry to act, since the catalog commonly lags real attacks, so patch on the usual severity-based schedule.

Public exploit availability: the primary references list no public exploit or Metasploit module as of writing. Private or unpublished exploit code may still exist, so do not downgrade the risk on that basis alone.

CVE-2026-3594 is a exposure of sensitive information to an unauthorized actor in Imprintnext Riaxe Product Customizer. The fix is to upgrade to see vendor advisory and apply the runnable commands below.

What is CVE-2026-3594?

The Riaxe Product Customizer plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.4 via the '/wp-json/InkXEProductDesignerLite/orders' REST API endpoint. The endpoint is registered with 'permission_callback' set to '__return_true', meaning no authentication or authorization checks are performed. The endpoint queries WooCommerce order data from the database and returns it to the requester, including customer first and last names, customer IDs, order IDs, order totals, order dates, currencies, and order statuses.

In practical terms, a successful attacker gets disclosure of sensitive information. There is no confirmed in-the-wild exploitation listed in CISA's KEV catalog at the time of writing, but the CVSS rating still warrants prompt patching.

Signal review

You are affected if you run Imprintnext Riaxe Product Customizer at a version listed in the Affected row above. Probe your installed build with the commands below.

# Confirm the installed version via your package manager
dpkg -l | grep -i riaxe   # Debian/Ubuntu
rpm -qa | grep -i riaxe   # RHEL/CentOS/Rocky

How to fix CVE-2026-3594

The primary fix is to upgrade to the patched build listed in the Fixed in row above (See vendor advisory). Pick the platform that matches your install and run the commands below.

Linux (Ubuntu / Debian)

# Vendor advisory: https://www.wordfence.com/threat-intel/vulnerabilities/id/2ffd6393-6604-48d9-ba22-7d989305e9ed?source=cve
sudo apt-get update
sudo apt-get install --only-upgrade riaxe-product-customizer
# Confirm the installed version meets or exceeds <patched-version>
dpkg -s riaxe-product-customizer | grep ^Version

Linux (RHEL / CentOS / Rocky)

sudo dnf upgrade --security riaxe-product-customizer -y
rpm -q riaxe-product-customizer

Windows (PowerShell, admin)

# Vendor advisory: https://www.wordfence.com/threat-intel/vulnerabilities/id/2ffd6393-6604-48d9-ba22-7d989305e9ed?source=cve
winget upgrade --id 'Imprintnext.RiaxeProductCustomizer' --silent --accept-source-agreements --accept-package-agreements
# If winget doesn't know the product, download the patched installer from the vendor and:
Start-Process -FilePath "$env:TEMP\RiaxeProductCustomizer-<patched-version>.msi" -ArgumentList '/qn /norestart' -Wait

PowerShell script (Windows): detect, back up, upgrade, verify, log

# Vendor advisory: https://www.wordfence.com/threat-intel/vulnerabilities/id/2ffd6393-6604-48d9-ba22-7d989305e9ed?source=cve
# Run as Administrator
$ErrorActionPreference = 'Stop'
$log = "$env:ProgramData\RiaxeProductCustomizer-Patch-CVE-2026-3594.log"
function Write-Log($msg) { "$(Get-Date -Format s)  $msg" | Tee-Object -FilePath $log -Append }

Write-Log "Starting CVE-2026-3594 remediation for Imprintnext Riaxe Product Customizer"

# 1. Detect: replace the path/version probe with one valid for your install
$installed = (Get-WmiObject -Class Win32_Product |
    Where-Object { $_.Name -like '*Riaxe*' } |
    Select-Object -First 1 -ExpandProperty Version)
Write-Log "Detected version: $installed"

if (-not $installed) {
    Write-Log "Product not installed on this host; nothing to do."
    return
}
if ([version]$installed -ge [version]'<patched-version>') {
    Write-Log "Already at fixed version $installed; no action needed."
    return
}

# 2. Backup configuration to a timestamped folder
$backup = "$env:ProgramData\RiaxeProductCustomizer-Backup-$(Get-Date -Format yyyyMMdd-HHmm)"
New-Item -ItemType Directory -Path $backup -Force | Out-Null
$src = "$env:ProgramFiles\Imprintnext\Riaxe Product Customizer"
if (Test-Path $src) { Copy-Item -Path $src -Destination $backup -Recurse -Force }
Write-Log "Backed up config to $backup"

# 3. Apply the patched installer
$installer = "$env:TEMP\RiaxeProductCustomizer-<patched-version>.msi"
if (-not (Test-Path $installer)) {
    throw "Patched installer not found at $installer. Stage it from your software repo first."
}
Start-Process msiexec.exe -ArgumentList "/i `"$installer`" /qn /norestart" -Wait
Write-Log "Installer finished"

# 4. Verify
$verify = (Get-WmiObject -Class Win32_Product |
    Where-Object { $_.Name -like '*Riaxe*' } |
    Select-Object -First 1 -ExpandProperty Version)
if ([version]$verify -ge [version]'<patched-version>') {
    Write-Log "SUCCESS: now at $verify (>= <patched-version>)"
} else {
    Write-Log "FAILURE: still at $verify after install"
    exit 1
}

Bash script (Linux): detect, back up, upgrade, verify, log

# Vendor advisory: https://www.wordfence.com/threat-intel/vulnerabilities/id/2ffd6393-6604-48d9-ba22-7d989305e9ed?source=cve
#!/usr/bin/env bash
set -euo pipefail
LOG=/var/log/riaxe-product-customizer-patch-cve-2026-3594.log
log()  { echo "$(date -Iseconds)  $*" | tee -a "$LOG"; }

log "Starting CVE-2026-3594 remediation for Imprintnext Riaxe Product Customizer"

# 1. Detect installed version (works for deb and rpm packages)
if command -v dpkg >/dev/null && dpkg -s riaxe-product-customizer >/dev/null 2>&1; then
    CURRENT=$(dpkg-query -W -f='${Version}' riaxe-product-customizer)
    PKG_MGR=apt
elif command -v rpm >/dev/null && rpm -q riaxe-product-customizer >/dev/null 2>&1; then
    CURRENT=$(rpm -q --queryformat '%{VERSION}' riaxe-product-customizer)
    PKG_MGR=dnf
else
    log "riaxe-product-customizer not installed via apt or rpm; check your package manager or vendor instructions."
    exit 0
fi
log "Detected: riaxe-product-customizer=$CURRENT (manager=$PKG_MGR)"

# 2. Backup config
BACKUP=/var/backups/riaxe-product-customizer-$(date +%Y%m%d-%H%M)
mkdir -p "$BACKUP"
for d in /etc/riaxe-product-customizer /etc/${pkg%%-*} ; do
    [ -d "$d" ] && cp -a "$d" "$BACKUP/" && log "Backed up $d to $BACKUP"
done

# 3. Upgrade
if [ "$PKG_MGR" = apt ]; then
    sudo apt-get update -y
    sudo apt-get install --only-upgrade -y riaxe-product-customizer
else
    sudo dnf upgrade --security -y riaxe-product-customizer
fi

# 4. Verify
if [ "$PKG_MGR" = apt ]; then
    NEW=$(dpkg-query -W -f='${Version}' riaxe-product-customizer)
else
    NEW=$(rpm -q --queryformat '%{VERSION}' riaxe-product-customizer)
fi
log "After upgrade: $NEW"
log "Done. Compare $NEW against <patched-version> and restart the affected service if needed."

If you cannot patch immediately

These are runnable hardening commands. They reduce blast radius but they are not a replacement for the vendor patch.

Restrict the management interface to a trusted admin subnet

Linux (iptables):

sudo iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/24 -j ACCEPT
sudo iptables -A INPUT -p tcp --dport 443 -j DROP
sudo iptables-save | sudo tee /etc/iptables/rules.v4

Windows (PowerShell, admin):

New-NetFirewallRule -DisplayName 'Allow admin UI from jump network' -Direction Inbound -Action Allow -Protocol TCP -LocalPort 443 -RemoteAddress 10.0.0.0/24
New-NetFirewallRule -DisplayName 'Block admin UI from everywhere else' -Direction Inbound -Action Block -Protocol TCP -LocalPort 443

Repair sequence

Run the version probe again and confirm the running build matches the Fixed in row above.

dpkg -l | grep -i "riaxe"   # Debian/Ubuntu
rpm -qa | grep -i "riaxe"   # RHEL/CentOS/Rocky

Expected output: the package version should meet or exceed the patched build.

Re-run any vulnerability scanner you used previously and confirm the finding for CVE-2026-3594 has cleared. Sweep your logs for indicators of compromise listed in the vendor or CISA advisory, especially if the system was internet-reachable during the disclosure window.

Frequently asked questions

Is CVE-2026-3594 being actively exploited?

Not at the time of writing. It is not listed in CISA's Known Exploited Vulnerabilities catalog. That status can change, so monitor the vendor advisory and the KEV catalog if the system is exposed.

How severe is CVE-2026-3594?

CVSS rates it 5.3 (Medium). Use that score to set your patch priority alongside the other items in your queue.

Do I have to take Riaxe Product Customizer offline to apply the patch?

It depends on the deployment. High-availability or clustered installs can usually patch one node at a time with no full outage. Standalone installs typically need a short restart. Always follow the vendor's documented upgrade steps.

What if my vulnerability scanner still flags CVE-2026-3594 after I patch?

Re-run the scan after a service restart, then confirm the scanner's plugin set is up to date. Some scanners detect by banner version only and lag the official fix metadata by a release.

Nearby vulnerabilities you may as well remediate alongside this fix:

References

Written by Sai Kiran Pandrala