CVE-2021-39187

HIGH7.5EPSS 0.66%

Parse Server crashes with query parameter

Published: 9/2/2021Modified: 3/13/2026

Also known as:GHSA-xqp8-w826-hh6xBIT-parse-2021-39187

Description

### Impact Parse Server crashes when if a query request contains an invalid value for the `explain` option. This is due to a bug in the MongoDB Node.js driver which throws an exception that Parse Server cannot catch. ### Patches Upgrade to Parse Server 4.10.3

Affected packages (2)

Bitnami/parsefrom 0, < 4.10.3
npm/parse-serverfrom 0, < 4.10.3

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	HIGH7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References (6)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-39187
PATCHhttps://github.com/parse-community/parse-server
WEBhttps://github.com/parse-community/parse-server/commit/308668c89474223e2448be92d6823b52c1c313ec
WEBhttps://github.com/parse-community/parse-server/releases/tag/4.10.3
WEBhttps://github.com/parse-community/parse-server/security/advisories/GHSA-xqp8-w826-hh6x
WEBhttps://jira.mongodb.org/browse/NODE-3463