Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.9 fail to restrict domains the LLM can request to contact upstream which allows an authenticated user to exfiltrate data from an arbitrary server accessible to the victim via performing a prompt injection in the AI plugin's Jira tool.
{ "nvd_published_at": "2025-04-16T10:15:15Z", "github_reviewed": true, "github_reviewed_at": "2025-04-16T15:15:47Z", "severity": "LOW", "cwe_ids": [ "CWE-201", "CWE-497" ] }