CVE-2026-31875
Description
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.
How to fix
- parseplatform parse-server8.6.33, 9.6.0 or later
- parse-server9.6.0-alpha.7, 8.6.33 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| parseplatform parse-server | v < 8.6.33, 9.0.0 ≤ v < 9.6.0, 9.6.0 | 8.6.33, 9.6.0 |
| parse-servernpm | 9.0.0-alpha.1 ≤ v < 9.6.0-alpha.7, v < 8.6.33 | 9.6.0-alpha.7, 8.6.33 |
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