Mattermost Desktop App versions <= 5.13.0 fail to validate URLs external to the configured Mattermost servers, allowing an attacker on a server the user has configured to crash the user's application by sending the user a malformed URL.
{
"cna_assigner": "Mattermost",
"cwe_ids": [
"CWE-1287"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/58xxx/CVE-2025-58084.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"last_affected": "5.13.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}
]
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"last_affected": "5.13.0"
}
],
"source": "DESCRIPTION"
}
]
}