TI-2026-83071 Aliases CVE-2026-119569 GHSA-5gp4-jgm9-v67j

Prototype pollution in Parse Server causes denial of service

LOW 27CWE-1321Published 2026-10-30 · Updated 2026-10-30

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Parse Server before 8.6.108 and 9.0.0 before 9.10.5-alpha.9 is affected. User-controlled keys are expanded into objects without own-property checks, which enables prototype pollution (CWE-1321). A client with class write access can send dot notation field keys or ACL entry names that match built-in object members, corrupting built-in functions so that all requests fail until the server restarts.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

Parse Server before 8.6.108 and 9.0.0 before 9.10.5-alpha.9 contains a prototype pollution vulnerability because user-controlled keys are expanded into objects without own-property checks. Clients with class write access can send dot notation field keys or ACL entry names matching built-in object members to corrupt built-in functions, causing all requests to fail until server restart.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00378 31st percentileScored 2026-11-07

Fix Fixed parse-server (parse-community): 9.10.5-alpha.9, 8.6.108

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

Vendor	Product	Affected versions	Fixed in	Status	Source
parse-community	parse-server	9.0.0 to before 9.10.5-alpha.9	9.10.5-alpha.9	Patch available	CNA
parse-community	parse-server	before 8.6.108	8.6.108	Patch available	CNA

parse-server Vendorparse-community Affected 9.0.0 to before 9.10.5-alpha.9 Fixed in 9.10.5-alpha.9 Patch available CNA
parse-server Vendorparse-community Affected before 8.6.108 Fixed in 8.6.108 Patch available CNA

CPE names Threatist (inferred) · 1

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

CPE	Versions	Role	Vendor
cpe:2.3:a:parseplatform:parse-server::::::::	—	—	parse-community

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

Remediation

Upgrade Parse Server to 9.10.5-alpha.9 on the 9.x line or to 8.6.108 on the 8.x line.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Fix · CNA parse-server (parse-community) Fixed in 9.10.5-alpha.9
Fix · CNA parse-server (parse-community) Fixed in 8.6.108

Timeline

2026-10-30 Threatist record created from CVE-2026-119569
2026-10-30 CISA SSVC decision points changed
2026-10-30 Priority changed: MEDIUM → LOW
2026-10-30 Alias added: GHSA-5gp4-jgm9-v67j

References

Advisory 1

GitHub Security Advisory (GHSA-rx55-fw4j-pvpx)

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