An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the “exception” keyword.
[
{
"product": "python-pygments",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "python-pygments 2.7.4"
}
]
}
]