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CVE-2026-31875GHSA-4HF6-3X24-C9M8BIT-PARSE-2026-31875

Parse Server MFA recovery codes not consumed after use

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 8.6.33, 9.6.0-alpha.7
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • parse-community parse-server

    fixed in 8.6.33

  • parse-servernpm

    From 9.0.0-alpha.1 · fixed in 9.6.0-alpha.7

  • parse-servernpm

    fixed in 8.6.33

References 3

GitHub · parse-community/parse-server