When installing a package from a Mercurial VCS URL, e.g. pip install hg+..., with pip prior to v23.3, the specified Mercurial revision could be used to inject arbitrary configuration options to the hg clone call (e.g. --config). Controlling the Mercurial configuration can modify how and which repository is installed. This vulnerability does not affect users who aren't installing from Mercurial.
{
"nvd_published_at": "2023-10-25T18:17:44Z",
"github_reviewed": true,
"cwe_ids": [
"CWE-77"
],
"severity": "MODERATE",
"github_reviewed_at": "2023-10-30T15:00:34Z"
}