要点
- CVE-2026-31875 は parse-server (parseplatform), parse-server に影響する深刻度「中」 (CVSS 5.9) の脆弱性です。
- 今後30日間に悪用される確率（EPSS）：0.49%（全脆弱性の 42.2% より高い）。
- 対処：9.6.0, 8.6.33, 9.6.0-alpha.7 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 | = 9.6.0≥ 9.0.0, < 9.6.0< 8.6.33
| 9.6.08.6.33
|
| parse-server npm | ≥ 9.0.0-alpha.1, < 9.6.0-alpha.7< 8.6.33
| 9.6.0-alpha.78.6.33
|
概要
Impact
When multi-factor authentication (MFA) via TOTP is enabled for a user account, Parse Server generates two single-use recovery codes. These codes are intended as a fallback when the user cannot provide a TOTP token. However, recovery codes are not consumed after use, allowing the same recovery code to be used an unlimited number of times. This defeats the single-use design of recovery codes and weakens the security of MFA-protected accounts.
An attacker who obtains a single recovery code can repeatedly authenticate as the affected user without the code ever being invalidated.
Patches
The fix ensures that each recovery code is removed from the stored recovery code list after a successful login.
Workarounds
There is no known workaround.
References
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 9.6.0-alpha.7 and 8.6.33, when multi-factor authentication (MFA) via TOTP is enabled for a user account, Parse Server generates two single-use recovery codes. These codes are intended as a fallback when the user cannot provide a TOTP token. However, recovery codes are not consumed after use, allowing the same recovery code to be used an unlimited number of times. This defeats the single-use design of recovery codes and weakens the security of MFA-protected accounts. An attacker who obtains a single recovery code can repeatedly authenticate as the affected user without the code ever being invalidated. This vulnerability is fixed in 9.6.0-alpha.7 and 8.6.33.
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