CVE-2026-31872 Parse Server has a protected fields bypass via dot-notation in query and sort
Attackers can bypass protected field restrictions in Parse Server using dot-notation queries to enumerate sensitive data values.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-31872?
CVE-2026-31872 is a high-severity vulnerability in Parseplatform Parse-Server, published on 11 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-284
Which versions are affected by CVE-2026-31872?
5 open source packages ship an affected version, including parse-server and parse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
parse-server npm | All versions | 8.6.32 |
parse-server npm | All versions | 8.6.32 |
parse-server npm | From 9.0.0-alpha.1 | 9.6.0-alpha.6 |
parse-server npm | From 9.0.0-alpha.1 | 9.6.0-alpha.6 |
parse Bitnami | All versions | 8.6.32, 9.6.0 |
Products include Parseplatform Parse-Server.
How do I fix CVE-2026-31872?
Upgrade parse-server to a fixed version for your release line: 8.6.32 or 9.6.0-alpha.6.
Is CVE-2026-31872 being exploited?
There is no known exploitation of CVE-2026-31872 in the wild and no public exploit code.
Other vulnerabilities in Parseplatform Parse-Server
- CVE-2026-30966 Parse Server role escalation and CLP bypass via direct `_Join` table write
- CVE-2024-27298 Parse Server literalizeRegexPart SQL Injection
- CVE-2022-24760 Command Injection in Parse server
- CVE-2026-30965 Parse Server session token exfiltration via `redirectClassNameForKey` query parameter
- CVE-2023-36475 Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution
Sources
Also known as BIT-parse-2026-31872, GHSA-r2m8-pxm9-9c4g.