1.0.5 and all previous releases
Remote Script Execution*
A vigilant community member sent us a security notice to let us know that he found a security issue in a compromised site running MODX Evolution 1.0.5.
Upon investigation, we determined that MODX Evolution had been sanitizing global GPC (GET/POST/Cookie or Request) variables in a way that allowed any Snippet within MODX that echoed user input (i.e. a website form field) from the GPC variables back to the output (for display) to inadvertently execute the MODX tags provided in the input field.
*Remote script execution requires specific configurations of add-ons included in the core.
All MODX 0.9.x/Evolution releases prior to and including MODX Evolution 1.0.5 are affected.
Upgrade to MODX Evolution 1.0.6
[ed. note: smashingred last edited this post 6 years ago.]