Loading vulnerability…
CVE-2015-7808 is a critical pre-authentication remote code execution vulnerability in vBulletin 5 Connect versions 5.1.2 through 5.1.9. The vulnerability resides in the vB_Api_Hook::decodeArguments method, which uses PHP's unserialize() function on user-supplied input (the 'arguments' parameter) in the ajax/api/hook/decodeArguments endpoint. This allows remote attackers to perform PHP object injection by sending crafted serialized objects, leading to arbitrary PHP code execution. The exploit leverages the vB_dB_Result and vB_Database classes to trigger code execution. The vulnerability was actively exploited in the wild, including the compromise of the vBulletin main forum.
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 (2 hidden).
This repository contains a single Metasploit module (modules/exploits/multi/http/vbulletin_unserialize.rb) that exploits a PHP object injection vulnerability (CVE-2015-7808) in vBulletin versions 5.1.2 to 5.1.9 (and 5.0.x for a specific target). The exploit works by sending a specially crafted serialized PHP object in the 'arguments' GET parameter to the /ajax/api/hook/decodeArguments endpoint of the target vBulletin installation. If the target is vulnerable, this results in arbitrary PHP code execution, allowing the attacker to run commands or deploy further payloads. The module includes automatic version detection and supports both automatic and manual targeting. The code is written in Ruby and is designed to be used within the Metasploit framework, making it a weaponized exploit. The only fingerprintable endpoint is the vulnerable HTTP path used in the attack.
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.
No public activity tracked yet. Mallory keeps watching.
No public activity observed for this vulnerability.
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.