Preface: As time goes by, an evolution in technology offers best-of-class in rendering for both VFX and feature film animation.

What does VFX stand for?
Visual effects (abbreviated VFX) is the process by which imagery is created or manipulated outside the context of a live action shot in film making.
RenderMan offers a combination of unbiased and biased rendering techniques which provide both accuracy and technical efficiency

Vulnerability details:
Pixar’s Tractor software, versions 2.2 and earlier, contain a stored cross-site scripting vulnerability.

Stored XSS, also known as persistent XSS, is the more damaging of the two. It occurs when a malicious script is injected directly into a vulnerable web application.
In most of the cases, cross-site scripting attack is being used to steal the other person‘s cookies. As we know, cookies help us to log in automatically. Therefore with stolen cookies, we can login with the other identities. Cope with above vulnerability, the stored information is displayed when a user requests information about the node. An attacker could insert Javascript into this note field that is then saved and displayed to the end user.

Reference: https://kb.cert.org/vuls/id/756913/