Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, the /api/v1/auths/signin endpoint looked users up by email and only ran bcrypt password verification when a credential existed, making registered-account attempts measurably slower than missing-email attempts and allowing unauthenticated account enumeration. This issue is fixed in version 0.10.0.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-208"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59218.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "0.10.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "993e74912199c66c522f08ec81abe31d76985e39"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "v0.10.0",
"range": [
{
"fixed": "4d2e13cf2bcc451b33bb6374bea4d2163e6cc94c"
}
],
"source": "REFERENCES_TAG"
}
]
}