Discourse is an open source discussion platform. Prior to versions 3.5.3, 2025.11.1, and 2025.12.0, an attacker who knows part of a username can find the user and their full name via UI or API, even when enable_names is disabled. Versions 3.5.3, 2025.11.1, and 2025.12.0 contain a fix.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-202"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64528.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "3.5.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:discourse:discourse:2025.11.0:*:*:*:stable:*:*:*",
"range": [
{
"introduced": "2025.11.0"
},
{
"last_affected": "2025.11.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:discourse:discourse:2025.12.0:*:*:*:stable:*:*:*",
"range": [
{
"introduced": "2025.12.0"
},
{
"last_affected": "2025.12.0"
}
],
"source": "CPE_STRING"
},
{
"range": [
{
"fixed": "1cb45b8b287597085e3514596ffb1d9b41938f81"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "6192f55629624925595dae14364fd86cac0f09df"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "e936a523b5900a9d866d23ea3da904ba12bb0fb2"
}
],
"source": "REFERENCES_COMMIT"
}
]
}