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TI-2026-23299 Aliases CVE-2026-29182GHSA-vc89-5g3r-cmhh

Parse Server: Cloud Hooks and Cloud Jobs bypass `readOnlyMasterKey` write restriction

Priority MEDIUM 40CWE-863Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.

Summary

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.4 and 9.4.1-alpha.3, Parse Server's readOnlyMasterKey option allows access with master-level read privileges but is documented to deny all write operations. However, some endpoints incorrectly accept the readOnlyMasterKey for mutating operations. This allows a caller who only holds the readOnlyMasterKey to create, modify, and delete Cloud Hooks and to start Cloud Jobs, which can be used for data exfiltration. Any Parse Server deployment that uses the readOnlyMasterKey option is affected. Note than an attacker needs to know the readOnlyMasterKey to exploit this vulnerability. This issue has been patched in versions 8.6.4 and 9.4.1-alpha.3.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00428 37th percentileScored 2026-11-07
Fix Fixed parse-server (parse-community): 8.6.4, 9.4.1-alpha.3parse-server (npm): 9.4.1-alpha.3, 8.6.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 8.6.4; before 9.4.1-alpha.38.6.4, 9.4.1-alpha.3Patch availableCNA
—parse-server (npm)9.0.0 to before 9.4.1-alpha.39.4.1-alpha.3Patch availableGHSA-vc89-5g3r-cmhh
—parse-server (npm)before 8.6.48.6.4Patch availableGHSA-vc89-5g3r-cmhh
  • parse-server Vendorparse-community Affected before 8.6.4; before 9.4.1-alpha.3 Fixed in 8.6.4, 9.4.1-alpha.3 Patch available CNA
  • parse-server (npm) Vendor— Affected 9.0.0 to before 9.4.1-alpha.3 Fixed in 9.4.1-alpha.3 Patch available GHSA-vc89-5g3r-cmhh
  • parse-server (npm) Vendor— Affected before 8.6.4 Fixed in 8.6.4 Patch available GHSA-vc89-5g3r-cmhh

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*before 8.6.4; 9.0.0 – 9.4.0Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.4.1:alpha1:*:*:*:node.js:*:*9.4.1 alpha1Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.4.1:alpha2:*:*:*:node.js:*:*9.4.1 alpha2Vulnerableparse-community
  • cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* Versions before 8.6.4; 9.0.0 – 9.4.0 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.4.1:alpha1:*:*:*:node.js:*:* Versions 9.4.1 alpha1 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.4.1:alpha2:*:*:*:node.js:*:* Versions 9.4.1 alpha2 Vulnerable ·parse-community

Remediation

  • Fix · CNA parse-server (parse-community) Fixed in 8.6.4, 9.4.1-alpha.3
  • Fix · GHSA-vc89-5g3r-cmhh parse-server (npm) Fixed in 9.4.1-alpha.3 Advisory →
  • Fix · GHSA-vc89-5g3r-cmhh parse-server (npm) Fixed in 8.6.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-29182
  2. 2026-10-03 Alias added: GHSA-vc89-5g3r-cmhh
  3. 2026-10-25 Priority changed: MEDIUM → LOW
  4. 2026-11-02 Priority changed: LOW → MEDIUM

References

Patch 2

Advisory 2

Other 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-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