Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO login flow checked the IdP email_verified claim only for new-user creation and not when SSO_SIGNUPS_MATCH_EMAIL=true linked an IdP identity to an existing local account, allowing an attacker-controlled IdP identity asserting a victim email address to bind to and authenticate as that account. This issue is fixed in version 1.36.0.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-284"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47164.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.36.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "d297e274a35dccd0f5d935e9d5934e0f7e9c0a87"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "1.36.0",
"range": [
{
"fixed": "f21a3adae2fbb8582b60b121783c597fe6895ff4"
}
],
"source": "REFERENCES_TAG"
}
]
}