CVE-2016-5726

Packages.php in Simple Machines Forum (SMF) 2.1 allows remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via the…

published February 9, 2017

CVSS
—
EPSS
2%
Percentile
75.0
In the wild
Unconfirmed
What it is

⚠️ A sneaky vulnerability in Simple Machines Forum can let remote attackers execute arbitrary PHP code just by tampering with a certain parameter. Who would have thought a simple array could be so dangerous? Think of it like a restaurant's order system where a customer can sneak in requests that change the entire menu — the kitchen trusts the orders explicitly, leading to unexpected dishes landing on tables without verification. If exploited, an attacker could run malicious PHP code on your server, potentially compromising user data, defacing your forum, or even taking control of the entire system. A recipe for chaos, right?

Put simply

Think of it like a restaurant's order system where a customer can sneak in requests that change the entire menu — the kitchen trusts the orders explicitly, leading to unexpected dishes landing on tables without verification. This vulnerability arises from PHP object injection via the 'themechanges' array, allowing attackers to manipulate an application's flow and execute their own code.

What to do

If exploited, an attacker could run malicious PHP code on your server, potentially compromising user data, defacing your forum, or even taking control of the entire system. A recipe for chaos, right? To safeguard your forum, immediately update to the latest version of SMF that patches this vulnerability. Regularly review your input validation processes to ensure that such manipulations can't slip through again. You've got this! Strengthen your defenses and keep your forum secure! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01566 · 75.0th percentile
Published
2017-02-09T15:00Z
EPSS history
Timeline
  • 09 FEB 15:00Z
    Packages.php in Simple Machines Forum (SMF) 2.1 allows remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via the…
    cvelistv5