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Authorization flaw in Parse Server misdirects installation updates

Priority LOW 27CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
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 from 9.7.0 before 9.10.5-alpha.10 contains an authorization flaw (CWE-639) that applies _Installation updates addressed by object ID to the installation named in the X-Parse-Installation-Id header. When protectedFieldsTriggerExempt is enabled, a remote attacker who knows another installation's object ID can make a beforeSave trigger process that installation's protected fields while writing to a different installation.

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

Description from the CNA

Parse Server from 9.7.0 before 9.10.5-alpha.10 contains an authorization flaw that applies _Installation updates addressed by object ID to the installation named in the X-Parse-Installation-Id header. When protectedFieldsTriggerExempt is enabled, attackers knowing another installation's object ID can make a beforeSave trigger process that installation's protected fields while writing elsewhere.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00219 12th percentileScored 2026-11-07
Fix Fixed parse-server (parse-community): 9.10.5-alpha.10

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-server9.7.0 to before 9.10.5-alpha.109.10.5-alpha.10Patch availableCNA
  • parse-server Vendorparse-community Affected 9.7.0 to before 9.10.5-alpha.10 Fixed in 9.10.5-alpha.10 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 9.10.5-alpha.10 or later, which is the fixed version.

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.10

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-119571
  2. 2026-10-30 Alias added: GHSA-74ch-jc8r-c94c
  3. 2026-11-01 Priority changed: MEDIUM → LOW
  4. 2026-11-04 CISA SSVC decision points changed

References

  • 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