Sylabs Singularity 3.5.0 through 3.5.3 fails to report an error in a Status Code.
https://github.com/hpcng/singularity/security/advisories/GHSA-6w7g-p4jh-rf92
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00053.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00046.html