The patch for directory traversal (CVE-2017-5480) in b2evolution version 6.8.4-stable has a bypass vulnerability. An attacker can use ..\/ to bypass the filter rule. Then, this attacker can exploit this vulnerability to delete or read any files on the server. It can also be used to determine whether a file exists.
{
"extracted_events": [
{
"introduced": "6.8.4"
},
{
"last_affected": "6.8.4"
}
],
"cpe": "cpe:2.3:a:b2evolution:b2evolution:6.8.4:*:*:*:*:*:*:*",
"source": [
"CPE_STRING",
"REFERENCES"
]
}