Vulnerability in Parse-Community Parse-Server
CVE-2026-31872
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 · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (38.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Parse-Community Parse-Server — versions >= 9.0.0 < 9.6.0-alpha.6, < 8.6.32
- Parseplatform Parse-Server — versions 9.6.0
Weakness classification (CWE)
References
- github.com/parse-community/parse-server/security/advisories/GHSA-r2m8-pxm9-9c4g (Patch, Vendor Advisory)
- github.com/parse-community/parse-server/releases/tag/8.6.32 (Product, Release Notes)
- github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.6 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-31872?
- CVE-2026-31872 is a high-severity vulnerability in Parse-Community Parse-Server, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-03-11.
- How severe is CVE-2026-31872?
- High severity. CVSS v3 base score is 7.5 out of 10.