njs through 0.3.3, used in NGINX, has a buffer over-read in nxtutf8decode in nxt/nxtutf8.c. This issue occurs after the fix for CVE-2019-12207 is in place.
njs through 0.3.3, used in NGINX, has a heap-based buffer over-read in nxtvsprintf in nxt/nxtsprintf.c during error handling, as demonstrated by an njsregexpliteral call that leads to an njsparserlexererror call and then an njsparserscopeerror call.