Login Request a demo
Medium severity · published Mar 31, 2026
CVE-2026-34224
Parse Server: MFA single-use token bypass via concurrent authData login requests
4.4
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
parse-server · parse-community
< 8.6.64; >= 9.0.0, < 9.7.0-alpha.8 · source: vendor, NVD
Affected product
PA
parse-server
parse-community
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34224
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34224
Patch
https://github.com/parse-community/parse-server/commit/661f160edac8daac0486bc94413cf9652876ab92
Patch
https://github.com/parse-community/parse-server/commit/e7efbebba398ce6abe5b6b6fb9829c6ebe310fbf
Issue Tracking
https://github.com/parse-community/parse-server/pull/10326
Issue Tracking
https://github.com/parse-community/parse-server/pull/10327
Patch
https://github.com/parse-community/parse-server/security/advisories/GHSA-w73w-g5xw-rwhf
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