Loading vulnerability…
CVE-2019-12799 is a vulnerability in Shopware through 5.6.x in the createInstanceFromNamedArguments functionality. A crafted web request can trigger unsafe PHP object instantiation, and if an attacker can cause instantiation of a suitable class, this condition can lead to arbitrary deserialization. The issue is effectively a bypass of the earlier whitelist-based fix for CVE-2017-18357, allowing attacker-controlled input to reach a deserialization path through an assumed-trusted class. Successful exploitation can culminate in remote code execution through a usable gadget chain.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module targeting Shopware (versions 5.3 to 5.6) via a PHP object instantiation vulnerability (CVE-2019-12799). The exploit requires valid backend credentials and leverages insufficient input validation in the createInstanceFromNamedArguments function to achieve PHP object injection. The module authenticates to the Shopware backend, leaks the webroot and CSRF token, crafts a malicious PHAR archive containing a PHP webshell, uploads it, and triggers deserialization to write the webshell to the server. The resulting webshell allows arbitrary PHP code execution via a custom HTTP header. The module is fully weaponized, providing automated exploitation and cleanup via the Metasploit framework. The main attack vector is network-based, targeting HTTP endpoints in the Shopware backend. The code is well-structured and leverages Metasploit's HttpClient and FileDropper mixins for HTTP communication and file management.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability chain involving bypass of an untrusted deserialization issue by using an assumed-trusted class.
A chained issue where an untrusted deserialization weakness is bypassed by leveraging an assumed-trusted class, enabling exploitation despite intended trust boundaries.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.