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CVE-2026-30835GHSA-9CP7-3Q5W-J92GBIT-PARSE-2026-30835

Parse Server: Malformed `$regex` query leaks database error details in API response

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 8.6.7, 9.5.0-alpha.6
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • 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 versions 8.6.7 and 9.5.0-alpha.6, malformed $regex query parameter (e.g. [abc) causes the database to return a structured error object that is passed unsanitized through the API response. This leaks database internals such as error messages, error codes, code names, cluster timestamps, and topology details. The vulnerability is exploitable by any client that can send query requests, depending on the deployment's permission configuration. This issue has been patched in versions 8.6.7 and 9.5.0-alpha.6.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • parse-community parse-server

    fixed in 8.6.7; fixed in 9.5.0-alpha.6

  • parse-servernpm

    From 9.0.0 · fixed in 9.5.0-alpha.6

  • parse-servernpm

    fixed in 8.6.7

References 3

GitHub · parse-community/parse-server