CVE-2026-33624

LOW

Parse Server: MFA recovery code single-use bypass via concurrent requests

Title source: cna
STIX 2.1

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.

References (5)

Core 5

Scores

CVSS v3 2.7
EPSS 0.0018
EPSS Percentile 7.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-367
Status published
Products (4)
npm/parse-server 9.0.0 - 9.6.0-alpha.54npm
parse-community/parse-server < 8.6.60
parse-community/parse-server >= 9.0.0, < 9.6.0-alpha.54
parseplatform/parse-server 9.6.0 alpha1 (47 CPE variants)
Published Mar 24, 2026
Tracked Since Mar 25, 2026