CVE-2026-33539 Parse Server: SQL injection via aggregate and distinct field names in PostgreSQL adapter
Attackers with master key access can inject SQL into PostgreSQL field names, escalating privileges to database level.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-33539?
CVE-2026-33539 is a high-severity SQL injection vulnerability in Parseplatform Parse-Server, published on 24 Mar 2026. An attacker needs administrator access to exploit it, 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 versions 8.6.59 and 9.6.0-alpha.53, an attacker with master key access can execute arbitrary SQL statements on the PostgreSQL database by injecting SQL metacharacters into field name parameters of the aggregate $group pipeline stage or the distinct operation. This allows privilege escalation from Parse Server application-level administrator to PostgreSQL database-level access. Only Parse Server deployments using PostgreSQL are affected. MongoDB deployments are not affected. This issue has been patched in versions 8.6.59 and 9.6.0-alpha.53.
Weakness: CWE-89
Which versions are affected by CVE-2026-33539?
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 | 8.6.59 |
parse-server npm | All versions | 8.6.59 |
parse-server npm | From 9.0.0 | 9.6.0-alpha.53 |
parse-server npm | From 9.0.0 | 9.6.0-alpha.53 |
parse Bitnami | All versions | 8.6.59, 9.6.0 |
Products include Parseplatform Parse-Server.
How do I fix CVE-2026-33539?
Upgrade parse-server to a fixed version for your release line: 8.6.59 or 9.6.0-alpha.53.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-33539 being exploited?
There is no known exploitation of CVE-2026-33539 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-2026-33539, GHSA-p2w6-rmh7-w8q3.