A Cascading Style Sheets (CSS) injection vulnerability in Swagger UI before 3.23.11 allows attackers to use the Relative Path Overwrite (RPO) technique to perform CSS-based input field value exfiltration, such as exfiltration of a CSRF token value. In other words, this product intentionally allows the embedding of untrusted JSON data from remote servers, but it was not previously known that <style>@import within the JSON data was a functional attack method.
{
"nvd_published_at": "2019-10-10T22:15:00Z",
"severity": "CRITICAL",
"github_reviewed_at": "2019-10-14T20:13:46Z",
"github_reviewed": true,
"cwe_ids": [
"CWE-352",
"CWE-79"
]
}