Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to prevent Wrangler posts from triggering AI responses. This vulnerability allows users without access to the AI bot to activate it by attaching the activate_ai override property to a post via the Wrangler plugin, provided both the AI and Wrangler plugins are enabled.
{
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "10.5.0"
},
{
"last_affected": "10.5.1"
},
{
"introduced": "10.4.0"
},
{
"last_affected": "10.4.3"
},
{
"introduced": "9.11.0"
},
{
"last_affected": "9.11.9"
}
],
"source": "AFFECTED_FIELD"
}
],
"cwe_ids": [
"CWE-863"
],
"cna_assigner": "Mattermost",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24839.json"
}{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "9.11.0"
},
{
"fixed": "9.11.10"
},
{
"introduced": "10.4.0"
},
{
"fixed": "10.4.4"
},
{
"introduced": "10.5.0"
},
{
"fixed": "10.5.2"
}
],
"source": "CPE_RANGE"
}