Low severityNVD Advisory· Published Mar 24, 2026· Updated Mar 25, 2026
Parse Server: MFA recovery code single-use bypass via concurrent requests
CVE-2026-33624
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
parse-servernpm | >= 9.0.0, < 9.6.0-alpha.54 | 9.6.0-alpha.54 |
parse-servernpm | < 8.6.60 | 8.6.60 |
Affected products
3- osv-coords2 versions
< 8.6.60+ 1 more
- (no CPE)range: < 8.6.60
- (no CPE)range: >= 9.0.0, < 9.6.0-alpha.54
- Range: < 8.6.60
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-2299-ghjr-6vjpghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-33624ghsaADVISORY
- github.com/parse-community/parse-server/commit/5e70094250a36bfcc14ecd49592be2b94fba66ffghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/commit/fc3da35a81d5083b453e8967cabcc880f1a3bd0cghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/pull/10275ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/pull/10276ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/security/advisories/GHSA-2299-ghjr-6vjpghsax_refsource_CONFIRMWEB
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