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Vulnerability details

CVE-2026-29182

parse-community parse-server

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

CVSS 4.0
8.6High

Official description

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.

CVSS scores

ScoreVersionSourceVector
8.6High 4.0 CVEProject cvelistV5 (CNA) (GitHub_M) CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

VendorProductVersionsSource
parse-community parse-server < 8.6.4 CVEProject cvelistV5 (CNA)
parse-community parse-server < 9.4.1-alpha.3 CVEProject cvelistV5 (CNA)

References and advisories

3
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Details

Published
2026-03-06
Last updated
2026-03-10
State
Published
Assigner (CNA)
GitHub_M

Exploit prediction (EPSS)

0.42%
Probability of exploitation in 30 days
37.1%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-863
    Incorrect Authorization