pcre: inefficient posix character class syntax check (8.38/16)

The pcrecompile function in pcrecompile.c in PCRE before 8.38 mishandles certain : nesting, which allows remote attackers to cause a denial of service CPU consumption or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object...

pcre: buffer overflow caused by recursive back reference by name within certain group (8.38/4)

PCRE before 8.38 mishandles the /?J?'d'?'d'\gd/ pattern and related patterns with certain recursive back references, which allows remote attackers to cause a denial of service buffer overflow or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScri...