CVE-2026-32886

HIGH

Parse Server's Cloud function dispatch crashes server via prototype chain traversal

Title source: cna
STIX 2.1

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.24 and 8.6.47, remote clients can crash the Parse Server process by calling a cloud function endpoint with a crafted function name that traverses the JavaScript prototype chain of a registered cloud function handler, causing a stack overflow. The fix in versions 9.6.0-alpha.24 and 8.6.47 restricts property lookups during cloud function name resolution to own properties only, preventing prototype chain traversal from stored function handlers. There is no known workaround.

References (3)

Core 3

Scores

CVSS v3 7.5
EPSS 0.0051
EPSS Percentile 39.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-1321
Status published
Products (5)
npm/parse-server 9.0.0 - 9.6.0-alpha.24npm
parse-community/parse-server < 8.6.47
parse-community/parse-server >= 9.0.0, < 9.6.0-alpha.24
parseplatform/parse-server 9.6.0 alpha1 (23 CPE variants)
parseplatform/parse-server < 8.6.47
Published Mar 18, 2026
Tracked Since Mar 19, 2026