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TI-2026-71119 Aliases CVE-2026-109303GHSA-pq6r-p5vh-4c89

protectedFields bypass in Parse Server via relation count queries

Priority LOW 23CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

Parse Server before 8.6.93 and 9.0.0 before 9.10.1-alpha.13 does not enforce identity-scoped protectedFields on count queries that use the $relatedTo operator, exposing the size of protected Relation fields (CWE-639). An authenticated user who can read the owning object can combine counts with an objectId constraint to infer confidential memberships such as private groups or block lists.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Parse Server before 8.6.93 and 9.0.0 before 9.10.1-alpha.13 does not enforce identity-scoped protectedFields (authenticated, role, or per-user groups) on count queries using the $relatedTo operator, exposing the size of protected Relation fields. An authenticated user who can read the owning object can combine counts with an objectId constraint as a membership oracle to reveal confidential memberships such as private groups or block lists.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00204 10th percentileScored 2026-11-07
Fix Fixed parse-server (parse-community): 9.10.1-alpha.13, 8.6.93

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
parse-communityparse-server9.0.0 to before 9.10.1-alpha.139.10.1-alpha.13Patch availableCNA
parse-communityparse-serverbefore 8.6.938.6.93Patch availableCNA
  • parse-server Vendorparse-community Affected 9.0.0 to before 9.10.1-alpha.13 Fixed in 9.10.1-alpha.13 Patch available CNA
  • parse-server Vendorparse-community Affected before 8.6.93 Fixed in 8.6.93 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:*:*:*——parse-community
  • cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:*:*:* Versions — — ·parse-community

Remediation

Upgrade parse-server to 8.6.93 for the 8.x line or to 9.10.1-alpha.13 for the 9.x line.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA parse-server (parse-community) Fixed in 9.10.1-alpha.13
  • Fix · CNA parse-server (parse-community) Fixed in 8.6.93

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109303
  2. 2026-10-12 Alias added: GHSA-pq6r-p5vh-4c89
  3. 2026-10-13 CISA SSVC decision points changed

References

Advisory 1

  • TI-2022-08574 Command Injection in Parse server CVSS 3.1CRITICAL 10.0
  • TI-2024-18136 Parse Server literalizeRegexPart SQL Injection CVSS 3.1CRITICAL 10.0
  • TI-2022-18768 Parse Server vulnerable to Remote Code Execution via prototype pollution in MongoDB BSON parser CVSS 3.1CRITICAL 9.8
  • TI-2024-31550 Parse Server's custom object ID allows to acquire role privileges CVSS 3.1HIGH 8.1
  • TI-2025-35510 parse is a package designed to parse JavaScript SDK. CVSS 3.1MEDIUM 6.5
  • TI-2024-26265 ZDI-CAN-23894: Parse Server literalizeRegexPart SQL Injection Authentication Bypass Vulnerability CVSS 3.1CRITICAL 9.8
See all 158 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences