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CVE

CVE-2026-31872

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

CVE-2026-31872

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

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.7
-
4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

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/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31872.json, https://github.com/parse-community/parse-server/security/advisories/GHSA-r2m8-pxm9-9c4g, https://nvd.nist.gov/vuln/detail/CVE-2026-31872

Severity

0

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
0
EPSS Probability
0.00049%
EPSS Percentile
0.15144%
Introduced Version
532a461d30a6ed4457839f2caf5f30d5abf51a55
Fix Available
e092f2cdad132a6fd8a36188283420458d404777

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