Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate permissions for the API endpoint /plugins/playbooks/api/v0/signal/keywords/ignore-thread, allowing any user or attacker to delete posts containing actions created by the Playbooks bot, even without channel access or appropriate permissions.
{
"cwe_ids": [
"CWE-863"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/41xxx/CVE-2025-41423.json",
"cna_assigner": "Mattermost",
"unresolved_ranges": [
{
"source": "AFFECTED_FIELD",
"extracted_events": [
{
"introduced": "10.4.0"
},
{
"last_affected": "10.4.2"
},
{
"introduced": "10.5.0"
},
{
"last_affected": "10.5.0"
},
{
"introduced": "9.11.0"
},
{
"last_affected": "9.11.10"
}
]
}
]
}{
"cpe": [
"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"cpe:2.3:a:mattermost:mattermost_server:10.5.0:-:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "9.11.0"
},
{
"fixed": "9.11.11"
},
{
"introduced": "10.4.0"
},
{
"fixed": "10.4.3"
},
{
"introduced": "10.5.0-NA"
},
{
"last_affected": "10.5.0-NA"
}
],
"source": [
"CPE_RANGE",
"CPE_STRING"
]
}