FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.215, MailboxesController::updateSave() persists chat_start_new outside the allowed-field filter. A user with only the mailbox sig permission sees only the signature field in the UI, but can still change the hidden mailbox-wide chat setting via direct POST. Version 1.8.215 fixes the vulnerability.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41191.json",
"cwe_ids": [
"CWE-863"
],
"cna_assigner": "GitHub_M"
}