TI-2026-85104 Aliases CVE-2026-121965 GHSA-vx56-7cxr-7m5w

Prototype pollution in Parse Server via dot notation keys

LOW 27CWE-1321Published 2026-11-04 · Updated 2026-11-04

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 8.6.113 and 9.0.0 before 9.10.6-alpha.5 has a prototype pollution flaw (CWE-1321) when building objects for Cloud Code triggers and LiveQuery. A dot notation key whose intermediate segment resolves through an inherited member writes onto a process-wide built-in. A client with write access to an object in a class with a trigger or LiveQuery can corrupt a built-in function, making unrelated requests fail until restart, denying service to all clients and hosted applications.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

Parse Server before 8.6.113 and 9.0.0 before 9.10.6-alpha.5 contains a prototype pollution vulnerability when building objects for Cloud Code triggers and LiveQuery, where a dot notation key whose intermediate segment resolves through an inherited member writes onto a process-wide built-in. Clients with write access to an object in a class with a trigger or LiveQuery can corrupt a built-in function, making unrelated requests fail until restart and denying service to all clients and hosted applications.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00413 35th percentileScored 2026-11-07

Fix Fixed parse-server (parse-community): 9.10.6-alpha.5, 8.6.113

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 9.10.6-alpha.5	9.10.6-alpha.5	Patch available	CNA
parse-community	parse-server	before 8.6.113	8.6.113	Patch available	CNA

parse-server Vendorparse-community Affected 9.0.0 to before 9.10.6-alpha.5 Fixed in 9.10.6-alpha.5 Patch available CNA
parse-server Vendorparse-community Affected before 8.6.113 Fixed in 8.6.113 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 8.6.113 on the 8.x line or to 9.10.6-alpha.5 on the 9.x line.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Fix · CNA parse-server (parse-community) Fixed in 9.10.6-alpha.5
Fix · CNA parse-server (parse-community) Fixed in 8.6.113

Timeline

2026-11-04 Threatist record created from CVE-2026-121965
2026-11-04 CISA SSVC decision points changed
2026-11-04 Priority changed: MEDIUM → LOW
2026-11-04 Alias added: GHSA-vx56-7cxr-7m5w

References

Patch 2

Advisory 1

GitHub Security Advisory (GHSA-95hp-82c6-25q5)

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