About Apple security updates
For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.
Apple security documents reference vulnerabilities by CVE-ID when possible.
macOS Server 5.11
Released December 14, 2020
Available for: macOS Big Sur
Impact: Processing a maliciously crafted URL may lead to an open redirect or cross site scripting
Description: An issue existed in the parsing of URLs. This issue was addressed with improved input validation.
CVE-2020-9995: Rajpal Arora (@whacktohack), Rohan Sharma (r0hanSH)
We would like to acknowledge Patrick Schlangen for their assistance.