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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.6 and 8.6.32, the protectedFields class-level permission (CLP) can be bypassed using dot-notation in query WHERE clauses and sort parameters. An attacker can use dot-notation to query or sort by sub-fields of a protected field, enabling a binary oracle attack to enumerate protected field values. This affects both MongoDB and PostgreSQL deployments. This vulnerability is fixed in 9.6.0-alpha.6 and 8.6.32.

PUBLISHED Reserved 2026-03-09 | Published 2026-03-11 | Updated 2026-03-11 | Assigner GitHub_M




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-284: Improper Access Control

Product status

>= 9.0.0 < 9.6.0-alpha.6
affected

< 8.6.32
affected

References

github.com/...server/security/advisories/GHSA-r2m8-pxm9-9c4g

github.com/parse-community/parse-server/releases/tag/8.6.32

github.com/...munity/parse-server/releases/tag/9.6.0-alpha.6

cve.org (CVE-2026-31872)

nvd.nist.gov (CVE-2026-31872)

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