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TI-2026-23771 Aliases CVE-2026-30946GHSA-cmj3-wx7h-ffvg

Parse Server affected by denial-of-service via unbounded query complexity in REST and GraphQL API

Priority MEDIUM 45CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.

Summary

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior 9.5.2-alpha.2 and 8.6.15, an unauthenticated attacker can exhaust Parse Server resources (CPU, memory, database connections) through crafted queries that exploit the lack of complexity limits in the REST and GraphQL APIs. All Parse Server deployments using the REST or GraphQL API are affected. This vulnerability is fixed in 9.5.2-alpha.2 and 8.6.15.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0062 49th percentileScored 2026-11-07
Fix Fixed parse-server (parse-community): 8.6.15parse-server (npm): 8.6.15, 9.5.2-alpha.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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-serverbefore 8.6.15; >= 9.0.0 < 9.5.2-alpha.28.6.15Patch availableCNA
—parse-server (npm)before 8.6.158.6.15Patch availableGHSA-cmj3-wx7h-ffvg
—parse-server (npm)9.0.0 to before 9.5.2-alpha.29.5.2-alpha.2Patch availableGHSA-cmj3-wx7h-ffvg
  • parse-server Vendorparse-community Affected before 8.6.15; >= 9.0.0 < 9.5.2-alpha.2 Fixed in 8.6.15 Patch available CNA
  • parse-server (npm) Vendor— Affected before 8.6.15 Fixed in 8.6.15 Patch available GHSA-cmj3-wx7h-ffvg
  • parse-server (npm) Vendor— Affected 9.0.0 to before 9.5.2-alpha.2 Fixed in 9.5.2-alpha.2 Patch available GHSA-cmj3-wx7h-ffvg

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*before 8.6.15; 9.0.0 to before 9.5.2Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha1:*:*:*:node.js:*:*9.5.2 alpha1Vulnerableparse-community
  • cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* Versions before 8.6.15; 9.0.0 to before 9.5.2 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha1:*:*:*:node.js:*:* Versions 9.5.2 alpha1 Vulnerable ·parse-community

Remediation

  • Fix · CNA parse-server (parse-community) Fixed in 8.6.15
  • Fix · GHSA-cmj3-wx7h-ffvg parse-server (npm) Fixed in 8.6.15 Advisory →
  • Fix · GHSA-cmj3-wx7h-ffvg parse-server (npm) Fixed in 9.5.2-alpha.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-30946
  2. 2026-10-03 Alias added: GHSA-cmj3-wx7h-ffvg
  3. 2026-10-07 EPSS moved to the 50th–90th percentile
  4. 2026-10-25 EPSS moved to the below the 50th percentile

References

Patch 1

Advisory 1

Other 3

  • 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-2023-18316 Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution CVSS 3.1CRITICAL 9.8
  • TI-2026-23790 Parse Server session token exfiltration via `redirectClassNameForKey` query parameter CVSS 4.0CRITICAL 9.9
See all 101 →

Sources

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