CVE-2026-34224

MEDIUM 4.4

Parse Server: MFA single-use token bypass via concurrent authData login requests

CVSS Score

4.4

EPSS Score

0.0%

EPSS Percentile

11th

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.

CWE	CWE-367
Vendor	parse-community
Product	parse-server
Published	Mar 31, 2026
Last Updated	Apr 2, 2026

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Affected Versions

parse-community / parse-server

< 8.6.64 >= 9.0.0, < 9.7.0-alpha.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/parse-community/parse-server/security/advisories/GHSA-w73w-g5xw-rwhf github.com: https://github.com/parse-community/parse-server/pull/10326 github.com: https://github.com/parse-community/parse-server/pull/10327 github.com: https://github.com/parse-community/parse-server/commit/661f160edac8daac0486bc94413cf9652876ab92 github.com: https://github.com/parse-community/parse-server/commit/e7efbebba398ce6abe5b6b6fb9829c6ebe310fbf