CVE-2026-31872
Parse Server has a protected fields bypass via dot-notation in query and sort
Impact
### Impact 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. ### Patches The fix ensures that query WHERE clause keys and sort keys are checked against protected fields by extracting the root field from dot-notation paths. For example, a query on `secretObj.apiKey` is now correctly blocked when `secretObj` is a protected field. ### Workarounds None. ### References - GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-r2m8-pxm9-9c4g - Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.6 - Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.32
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | parse-server | >= 9.0.0-alpha.1, < 9.6.0-alpha.6 | 9.6.0-alpha.6 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Parseplatform | Parse-Server | before 8.6.32 from 9.0.0 before 9.6.0 Version 9.6.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- 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
- https://github.com/advisories/GHSA-r2m8-pxm9-9c4g
- https://nvd.nist.gov/vuln/detail/CVE-2026-31872