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

低 2.7CVE-2026-33624 · BIT-parse-2026-33624 · GHSA-2299-ghjr-6vjp · 24/03/2026 公開 · 17/06/2026 更新

要点

CVE-2026-33624 は parse-server (parseplatform), parse-server に影響する深刻度「低」 (CVSS 2.7) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.18%（全脆弱性の 7.8% より高い）。
対処：9.6.0, 8.6.60, 9.6.0-alpha.54 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
parse-server parseplatform	`= 9.6.0≥ 9.0.0, < 9.6.0< 8.6.60`	`9.6.08.6.60`
parse-server npm	`≥ 9.0.0, < 9.6.0-alpha.54< 8.6.60`	`9.6.0-alpha.548.6.60`

概要

Impact

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.

Patches

The login handler now uses optimistic locking when updating auth data that contains consumed single-use tokens. If a concurrent request has already modified the recovery array, the update fails and the login is rejected.

Workarounds

There are no known workarounds.

NVD の説明

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.