Redcarpet is a Ruby library for Markdown processing. In Redcarpet before version 3.5.1, there is an injection vulnerability which can enable a cross-site scripting attack. In affected versions no HTML escaping was being performed when processing quotes. This applies even when the :escape_html option was being used. This is fixed in version 3.5.1 by the referenced commit.
[
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"198197667677715849428623281048180277561",
"54830763969004594676731107425085190938",
"97811103998125843691871254455650728211",
"139603207368515949909553120480638757958",
"313289017949240420953274720090354965485"
]
},
"target": {
"file": "ext/redcarpet/html.c"
},
"source": "https://github.com/vmg/redcarpet/commit/a699c82292b17c8e6a62e1914d5eccc252272793",
"id": "CVE-2020-26298-bc2a74b8",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Function",
"digest": {
"function_hash": "244524669993411248594301671481377802264",
"length": 249.0
},
"target": {
"file": "ext/redcarpet/html.c",
"function": "rndr_quote"
},
"source": "https://github.com/vmg/redcarpet/commit/a699c82292b17c8e6a62e1914d5eccc252272793",
"id": "CVE-2020-26298-ccd1bdea",
"deprecated": false,
"signature_version": "v1"
}
]