Low
Parse Server: MFA single-use token bypass via concurrent authData login requests
Type: advisorySources: OSV
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.64 and 9.7.0-alpha.8, an attacker who possesses a valid authentication provider token and a single MFA recovery code or SMS one-time password can create multiple authenticated sessions by sending concurrent login requests via the authData login endpoint. This defeats the single-use guarantee of MFA recovery codes and SMS one-time passwords, allowing session persistence even after the legitimate user revokes detected sessions. This issue has been patched in versions 8.6.64 and 9.7.0-alpha.8.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-34224
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 11:29 UTC · Revision 1
Source evidence
Parse Server: MFA single-use token bypass via concurrent authData login requests
core-osv · Original sourcePublished 31 Mar 2026, 14:25 UTC
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.64 and 9.7.0-alpha.8, an attacker who possesses a valid authentication provider token and a single MFA recovery code or SMS one-time password can create multiple authenticated sessions by sending concurrent login requests via the authData login endpoint. This defeats the single-use guarantee of MFA recovery codes and SMS one-time passwords, allowing session persistence even after the legitimate user revokes detected sessions. This issue has been patched in versions 8.6.64 and 9.7.0-alpha.8.
osv:CVE-2026-34224
Complete source record
{
"id": "501f12a726348eaf26d737001cc7ca56a5516cad87c6cd53014318d31e80e0c4",
"url": "https://osv.dev/vulnerability/CVE-2026-34224",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Parse Server: MFA single-use token bypass via concurrent authData login requests",
"summary": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.64 and 9.7.0-alpha.8, an attacker who possesses a valid authentication provider token and a single MFA recovery code or SMS one-time password can create multiple authenticated sessions by sending concurrent login requests via the authData login endpoint. This defeats the single-use guarantee of MFA recovery codes and SMS one-time passwords, allowing session persistence even after the legitimate user revokes detected sessions. This issue has been patched in versions 8.6.64 and 9.7.0-alpha.8.",
"evidence": "osv:CVE-2026-34224",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2026-34224",
"aliases": [
"BIT-parse-2026-34224",
"CVE-2026-34224",
"GHSA-w73w-g5xw-rwhf"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34224.json"
}
}
],
"modified": "2026-10-28T02:30:43.980218640Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34224.json",
"https://github.com/parse-community/parse-server/security/advisories/GHSA-w73w-g5xw-rwhf",
"https://nvd.nist.gov/vuln/detail/CVE-2026-34224",
"https://github.com/parse-community/parse-server/commit/661f160edac8daac0486bc94413cf9652876ab92",
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34224.json"
}
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"evidence": "/id"
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},
"source_id": "core-osv",
"document_id": 511734,
"published_at": "2026-03-31T14:25:22.782+00:00"
}