In Eclipse Jetty versions 9.4.21.v20190926, 9.4.22.v20191022, and 9.4.23.v20191118, the generation of default unhandled Error response content (in text/html and text/json Content-Type) does not escape Exception messages in stacktraces included in error output.
{
"binaries": [
{
"binary_version": "6.1.26-1ubuntu1.2",
"binary_name": "jetty"
},
{
"binary_version": "6.1.26-1ubuntu1.2",
"binary_name": "libjetty-extra"
},
{
"binary_version": "6.1.26-1ubuntu1.2",
"binary_name": "libjetty-extra-java"
},
{
"binary_version": "6.1.26-1ubuntu1.2",
"binary_name": "libjetty-java"
}
]
}