CVE-2026-31872

Parse Server has a protected fields bypass via dot-notation in query and sort

CVSS 8.7 HIGHEPSS 0.4%CWE-284

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.7EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

11 Mar 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

parse-community · parse-server

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References

https://github.com/parse-community/parse-server/releases/tag/8.6.32 https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.6 https://github.com/parse-community/parse-server/security/advisories/GHSA-r2m8-pxm9-9c4g