Releases prior to 3.0.2 are vulnerable to a Server-Side Request Forgery vulnerability that allows an attacker to send a request to an internal hostname.
3.0.2 contains a fix for this vulnerability. (The 1.x and 2.x releases are not maintained anymore.)
Part of the fix requires applying a patch to youtube-dl to prevent it from following HTTP redirects. If you are using the version of youtube-dl bundled with 3.0.2, it is already patched. However, if you are using your own unpatched version of youtube-dl you might still be vulnerable.
{
"github_reviewed_at": "2022-03-01T22:01:30Z",
"github_reviewed": true,
"severity": "CRITICAL",
"nvd_published_at": "2022-02-28T10:15:00Z",
"cwe_ids": [
"CWE-918"
]
}