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.
[
{
"product": "Eclipse Jetty",
"vendor": "The Eclipse Foundation",
"versions": [
{
"status": "affected",
"version": "9.4.21.v20190926"
},
{
"status": "affected",
"version": "9.4.22.v20191022"
},
{
"status": "affected",
"version": "9.4.23.v20191118"
}
]
}
]