CVE-2026-30835
MEDIUM
GHSA-9cp7-3q5w-j92g
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
3Tags
Description
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.
Analysis
Parse Server versions prior to 8.6.7 and 9.5.0-alpha.6 expose sensitive database information through unfiltered error responses when processing malformed regex queries. An unauthenticated attacker can craft specially crafted query parameters to leak database internals including error messages, cluster details, and topology information. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.
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