Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.60 and 9.6.0-alpha.54, an attacker who obtains a user's password and a single MFA recovery code can reuse that recovery code an unlimited number of times by sending concurrent login requests. This defeats the single-use design of recovery codes. The attack requires the user's password, a valid recovery code, and the ability to send concurrent requests within milliseconds. This issue has been patched in versions 8.6.60 and 9.6.0-alpha.54.
Metrics
CVSS 3.1 2.7/10
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| parse-community | parse-server | < 8.6.60; >= 9.0.0, < 9.6.0-alpha.54 |
References
- https://github.com/parse-community/parse-server/commit/5e70094250a36bfcc14ecd49592be2b94fba66ffPatch
- https://github.com/parse-community/parse-server/commit/fc3da35a81d5083b453e8967cabcc880f1a3bd0cPatch
- https://github.com/parse-community/parse-server/pull/10275Issue Tracking
- https://github.com/parse-community/parse-server/pull/10276Issue Tracking
- https://github.com/parse-community/parse-server/security/advisories/GHSA-2299-ghjr-6vjpVendor Advisory
Timeline
- Published
- Mar 24, 2026
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed