PT-2026-27485 · Parse Community · Parse Server

Spbavarva · Published 2026-03-24 · Updated 2026-03-24 · CVE-2026-33624

Mitre

CVSS v4.0

2.1

Low

AV:N/AC:H/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

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.

Fix

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2026-33624

Affected Products

Parse Server

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-33624 · Security Note
• https://github.com/parse-community/parse-server/pull/10275 · Note
• https://github.com/parse-community/parse-server/pull/10276 · Note
• https://github.com/parse-community/parse-server/commit/fc3da35a81d5083b453e8967cabcc880f1a3bd0c · Note
• https://github.com/parse-community/parse-server/commit/5e70094250a36bfcc14ecd49592be2b94fba66ff · Note
• https://github.com/parse-community/parse-server/security/advisories/GHSA-2299-ghjr-6vjp · Note