Skip to content
OpenAdvisories
High · 8.2 CVE-2026-31875 BIT-parse-2026-31875EUVD-2026-11280GHSA-4hf6-3x24-c9m8

Parse Server MFA recovery codes not consumed after use

Published Mar 11, 2026 · Updated Mar 12, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
parse-community parse-server >= 9.0.0 < 9.6.0-alpha.7, < 8.6.33 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm parse-server >= 9.0.0-alpha.1, < 9.6.0-alpha.7 9.6.0-alpha.7 GHSA-4hf6-3x24-c9m8
npm parse-server < 8.6.33 8.6.33 GHSA-4hf6-3x24-c9m8

References