http4s before versions 0.18.26, 0.20.20, and 0.21.2 has a local file inclusion vulnerability. This vulnerability applies to all users of org.http4s.server.staticcontent.FileService, org.http4s.server.staticcontent.ResourceService and org.http4s.server.staticcontent.WebjarService. URI normalization is applied incorrectly. Requests whose path info contain ../ or // can expose resources outside of the configured location. This issue is patched in versions 0.18.26, 0.20.20, and 0.21.2. Note that 0.19.0 is a deprecated release and has never been supported.
{
"versions": [
{
"introduced": "0"
},
{
"fixed": "0.18.26"
},
{
"introduced": "0.19.0"
},
{
"fixed": "0.20.20"
},
{
"introduced": "0.21.0"
},
{
"fixed": "0.21.2"
}
]
}