● High · CVSS 8.8

How to Fix CVE-2026-1929: Code injection in Advanced Woo Labels – Product Labels & Badges for WooCommerce

Q: What is the CVSS score for CVE-2026-1929?

8.8 (High). Vector: `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`.

Q: Where is the official advisory for CVE-2026-1929?

The vendor advisory is at [https://www.wordfence.com/threat-intel/vulnerabilities/id/bbae9c33-becb-4c9d-917f-0d8fe8312d0c?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/bbae9c33-becb-4c9d-917f-0d8fe8312d0c?source=cve). The NVD record is at https://nvd.nist.gov/vuln/detail/CVE-2026-1929.

By Sai Kiran Pandrala. Last verified: 2026-05-25.

CVE-2026-1929 is a code injection in mihail-barinov Advanced Woo Labels – Product Labels & Badges for WooCommerce. The fix is to apply the vendor patch noted below.

⚡ At a glance


Severity	8.8 (High)
Actively exploited?	No public listing in CISA KEV
Affected	Advanced Woo Labels – Product Labels & Badges for WooCommerce 0 to <=2.36
Fixed in	See vendor advisory
Type (CWE)	CWE-94 Improper Control of Generation of Code ('Code Injection')

What is CVE-2026-1929?

The Advanced Woo Labels plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 2.37. This is due to the use of call_user_func_array() with user-controlled callback and parameters in the get_select_option_values() AJAX handler without an allowlist of permitted callbacks or a capability check. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute arbitrary PHP functions and operating system commands on the server via the 'callback' parameter. The CVSS base score is 8.8 (High), which puts this in the upper risk band and warrants a fast patch cycle. The official advisory is at https://www.wordfence.com/threat-intel/vulnerabilities/id/bbae9c33-becb-4c9d-917f-0d8fe8312d0c?source=cve.

Am I affected?

Check the version of Advanced Woo Labels – Product Labels & Badges for WooCommerce you are running and compare it against the Affected row above (Advanced Woo Labels – Product Labels & Badges for WooCommerce 0 to <=2.36). If your build sits inside the affected range, you must patch.

Run the version check that fits your platform:


# Linux package check
dpkg -s advanced-woo-labels-product-labels-badges-for-woocommerce 2>/dev/null | grep -i ^Version
rpm -q advanced-woo-labels-product-labels-badges-for-woocommerce 2>/dev/null
command -v advanced-woo-labels-product-labels-badges-for-woocommerce >/dev/null && advanced-woo-labels-product-labels-badges-for-woocommerce --version 2>/dev/null


# Windows (PowerShell)
Get-Package -Name "*Advanced Woo Labels – Product Labels & Badges for WooCommerce*" -ErrorAction SilentlyContinue | Select-Object Name, Version
winget list --name "Advanced Woo Labels – Product Labels & Badges for WooCommerce" 2>$null

How to fix CVE-2026-1929

Upgrade Advanced Woo Labels – Product Labels & Badges for WooCommerce to a patched build: See vendor advisory. The vendor advisory is the source of truth for the exact fixed version.

Ubuntu / Debian


sudo apt-get update
sudo apt-get install --only-upgrade advanced-woo-labels-product-labels-badges-for-woocommerce
dpkg -s advanced-woo-labels-product-labels-badges-for-woocommerce | grep -i ^Version

RHEL / CentOS / Rocky / AlmaLinux


sudo dnf upgrade --refresh advanced-woo-labels-product-labels-badges-for-woocommerce -y
# or for older releases:
sudo yum update advanced-woo-labels-product-labels-badges-for-woocommerce -y
rpm -q advanced-woo-labels-product-labels-badges-for-woocommerce

SUSE / openSUSE


sudo zypper refresh
sudo zypper update advanced-woo-labels-product-labels-badges-for-woocommerce
rpm -q advanced-woo-labels-product-labels-badges-for-woocommerce

PHP / Composer


composer update mihail-barinov/advanced-woo-labels-product-labels-badges-for-woocommerce 2>/dev/null || composer update
composer show | head -20

WordPress


# Update via WP-CLI
wp plugin update --all
wp core update

Complete PowerShell remediation script (Windows)


# Fix script for CVE-2026-1929 affecting Advanced Woo Labels – Product Labels & Badges for WooCommerce
# Run as administrator. Detect -> backup -> upgrade -> verify -> log.

$ErrorActionPreference = "Stop"
$LogPath  = "C:\Logs\CVE-2026-1929-fix-$(Get-Date -Format yyyyMMdd-HHmmss).log"
New-Item -ItemType Directory -Force (Split-Path $LogPath) | Out-Null
Start-Transcript -Path $LogPath -Append

try {
    Write-Host "[1/4] Detect installed version"
    $pkg = Get-Package -Name "*Advanced Woo Labels – Product Labels & Badges for WooCommerce*" -ErrorAction SilentlyContinue
    if ($pkg) { $pkg | Format-Table Name, Version }
    else { Write-Host "Not detected via Get-Package; try winget list" }

    Write-Host "[2/4] Backup configuration"
    $backup = "C:\Backup\advanced-woo-labels-product-labels-badges-for-woocommerce-$(Get-Date -Format yyyyMMdd)"
    New-Item -ItemType Directory -Force $backup | Out-Null
    Get-ChildItem "C:\ProgramData\Advanced Woo Labels – Product Labels & Badges for WooCommerce" -ErrorAction SilentlyContinue |
        Copy-Item -Destination $backup -Recurse -Force -ErrorAction SilentlyContinue

    Write-Host "[3/4] Apply the upgrade to See vendor advisory"
    winget upgrade --name "Advanced Woo Labels – Product Labels & Badges for WooCommerce" --silent --accept-source-agreements --accept-package-agreements
    if ($LASTEXITCODE -ne 0) {
        # Fallback: pull latest via OS update channel
        Install-Module -Name PSWindowsUpdate -Force -SkipPublisherCheck -ErrorAction SilentlyContinue
        Import-Module PSWindowsUpdate
        Install-WindowsUpdate -MicrosoftUpdate -AcceptAll -IgnoreReboot
    }

    Write-Host "[4/4] Verify the patched build"
    winget list --name "Advanced Woo Labels – Product Labels & Badges for WooCommerce"
    Write-Host "Patch applied. Reboot if prompted."
    exit 0
} catch {
    Write-Error "Patch failed: $_"
    exit 1
} finally {
    Stop-Transcript
}

Complete Bash remediation script (Linux)


#!/usr/bin/env bash
# Fix script for CVE-2026-1929 affecting Advanced Woo Labels – Product Labels & Badges for WooCommerce
# Detect -> backup -> upgrade -> verify -> log.

set -euo pipefail
LOG="/var/log/cve-2026-1929-fix-$(date +%Y%m%d-%H%M%S).log"
exec > >(tee -a "$LOG") 2>&1

echo "[1/4] Detect installed version"
if command -v dpkg >/dev/null; then
    dpkg -s advanced-woo-labels-product-labels-badges-for-woocommerce 2>/dev/null | grep -i ^Version || echo "advanced-woo-labels-product-labels-badges-for-woocommerce not installed via dpkg"
elif command -v rpm >/dev/null; then
    rpm -q advanced-woo-labels-product-labels-badges-for-woocommerce || echo "advanced-woo-labels-product-labels-badges-for-woocommerce not installed via rpm"
fi

echo "[2/4] Backup configuration"
BACKUP="/root/backup-cve-2026-1929-$(date +%Y%m%d)"
mkdir -p "$BACKUP"
for d in /etc/advanced-woo-labels-product-labels-badges-for-woocommerce /etc/advanced-woo-labels-product-labels-badges-for-woocommerce.d /etc/advanced-woo-labels-product-labels-badges-for-woocommerce.conf; do
    [ -e "$d" ] && cp -a "$d" "$BACKUP/" || true
done

echo "[3/4] Apply the upgrade (target: See vendor advisory)"
if command -v apt-get >/dev/null; then
    apt-get update
    apt-get install --only-upgrade -y advanced-woo-labels-product-labels-badges-for-woocommerce
elif command -v dnf >/dev/null; then
    dnf upgrade --refresh -y advanced-woo-labels-product-labels-badges-for-woocommerce
elif command -v yum >/dev/null; then
    yum update -y advanced-woo-labels-product-labels-badges-for-woocommerce
elif command -v zypper >/dev/null; then
    zypper --non-interactive update advanced-woo-labels-product-labels-badges-for-woocommerce
fi

echo "[4/4] Verify the patched build"
if command -v dpkg >/dev/null; then
    dpkg -s advanced-woo-labels-product-labels-badges-for-woocommerce 2>/dev/null | grep -i ^Version
elif command -v rpm >/dev/null; then
    rpm -q advanced-woo-labels-product-labels-badges-for-woocommerce
fi
echo "Done. Restart any service that loaded the old library."

If you can't patch immediately

Apply at least one of the following inline controls until you can deploy the patched build. None replace the upgrade.

Restrict exposure with nftables (Linux)


# Allow only trusted CIDR to reach the affected service ports
sudo nft add table inet filter 2>/dev/null || true
sudo nft 'add chain inet filter input { type filter hook input priority 0 ; }' 2>/dev/null || true
sudo nft 'add rule inet filter input tcp dport {80, 443} ip saddr != 10.0.0.0/8 drop'
sudo nft list ruleset

Block at the host firewall (Windows)


New-NetFirewallRule -DisplayName "Block-CVE-2026-1929" -Direction Inbound -Action Block -Protocol TCP -LocalPort 80,443 -RemoteAddress Any -Enabled True
Get-NetFirewallRule -DisplayName "Block-CVE-2026-1929"

Disable the affected service (Linux)


sudo systemctl stop advanced-woo-labels-product-labels-badges-for-woocommerce 2>/dev/null || true
sudo systemctl disable advanced-woo-labels-product-labels-badges-for-woocommerce 2>/dev/null || true

If the vendor advisory lists an official workaround, prefer that wording verbatim. If no workaround is published, the only safe remediation is the patch.

How to verify the fix worked

After upgrading, confirm the installed version matches the patched build and that no old library is still loaded by a long-running process.


# Linux
dpkg -s advanced-woo-labels-product-labels-badges-for-woocommerce 2>/dev/null | grep -i ^Version
rpm -q advanced-woo-labels-product-labels-badges-for-woocommerce 2>/dev/null || true
# Pid map check for old library handles
sudo lsof +c0 2>/dev/null | grep -i "DEL.*lib" || true


# Windows
Get-Package -Name "*Advanced Woo Labels – Product Labels & Badges for WooCommerce*" | Select-Object Name, Version
Get-HotFix | Sort-Object InstalledOn -Descending | Select-Object -First 5

Expected: the reported version is at or above See vendor advisory. Restart the affected service (systemctl restart <service> on Linux, or restart the Windows service) so it loads the patched binary.

Frequently asked questions

Other vulnerabilities in the same area that are worth patching alongside this one:

How to Fix CVE-2026-3505: Allocation of resources without limits in BC-JAVA — Allocation of resources without limits in BC-JAVA
How to Fix CVE-2026-33126: Critical Vulnerability in frigate — Critical Vulnerability in frigate
How to Fix CVE-2026-42150: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripti , Improper Neutralization of Input During Web Page Generation ('Cross-site Scripti
How to Fix CVE-2026-26021: Critical Vulnerability in set-in , Critical Vulnerability in set-in
How to Fix CVE-2026-39933: Multiple XSS vulnerabilities in GlobalWatchlist , Multiple XSS vulnerabilities in GlobalWatchlist

Is CVE-2026-1929 actively exploited?

There is no public confirmation of exploitation in the wild listed in CISA KEV at the time of this writing. Patch anyway. Public exploits commonly follow disclosure within weeks.

Do I need to reboot after patching CVE-2026-1929?

For kernel and OS-level updates, yes. For most userland packages a systemctl restart <service> is enough on Linux, and restarting the Windows service or app on Windows. Any process that loaded the old library keeps using it until restarted.

What is the CVSS score for CVE-2026-1929?

8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Where is the official advisory for CVE-2026-1929?

The vendor advisory is at https://www.wordfence.com/threat-intel/vulnerabilities/id/bbae9c33-becb-4c9d-917f-0d8fe8312d0c?source=cve. The NVD record is at https://nvd.nist.gov/vuln/detail/CVE-2026-1929.

References

Official vendor advisory: https://www.wordfence.com/threat-intel/vulnerabilities/id/bbae9c33-becb-4c9d-917f-0d8fe8312d0c?source=cve
NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1929
CISA KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Additional reference: https://plugins.trac.wordpress.org/browser/advanced-woo-labels/tags/2.34/includes/admin/class-awl-admin-ajax.php#L136
Additional reference: https://plugins.trac.wordpress.org/browser/advanced-woo-labels/tags/2.34/includes/admin/class-awl-admin-ajax.php#L146
Additional reference: https://plugins.trac.wordpress.org/browser/advanced-woo-labels/trunk/includes/admin/class-awl-admin-ajax.php#L146

*Written by Sai Kiran Pandrala. Assembled from the official vendor advisory, NVD record, and CISA KEV listing on 2026-05-25. Always confirm against the vendor's advisory before applying changes in production.*