An issue found in Jsish v.3.0.11 and before allows an attacker to cause a denial of service via the StringReplaceCmd function in the src/jsiChar.c file.
Stack overflow vulnerability in function jsi_evalcode_sub in jsish before 3.0.18, allows remote attackers to cause a Denial of Service via a crafted value to the execute parameter.
jsish version 2.4.67 contains a CWE-476: NULL Pointer Dereference vulnerability in Jsi_LogMsg (jsiUtils.c:196) that can result in Crash due to segmentation fault. This attack appear to be exploitable via the victim executing specially crafted javascript code. This vulnerability appears to have been fixed in 2.4.69.