An issue was discovered in Mattermost Server before 3.2.0. It allowed crafted posts that could cause a web browser to hang.
{
"github_reviewed": true,
"nvd_published_at": "2020-06-19T20:15:00Z",
"cwe_ids": [
"CWE-400"
],
"github_reviewed_at": "2025-10-21T22:39:11Z",
"severity": "MODERATE"
}