CVE-2021-39187highCWE-74

CVE-2021-39187: high-severity vulnerability in parse-community parse-server

Crash server with query parameter

Published · Updated

Follow this CVE+ Monitor parse-server+ Monitor parse-server

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 1.8%
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to version 4.10.3, 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. There is a patch for this issue in version 4.10.3. No workarounds aside from upgrading are known to exist.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
parse-community · parse-server
Related CVEs — parse-community parse-server

In the same product, most dangerous first.

CVE-2022-24760CRITICALCommand Injection in Parse serverEPSS 49.4%CVE-2022-39396CRITICALParse Server vulnerable to Remote Code Execution via prototype pollution in MongoDB BSON parserEPSS 38.7%CVE-2024-39309CRITICALZDI-CAN-23894: Parse Server literalizeRegexPart SQL Injection Authentication Bypass VulnerabilityEPSS 20.2%CVE-2023-36475CRITICALParse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollutionEPSS 3.2%CVE-2026-30965CRITICALParse Server session token exfiltration via `redirectClassNameForKey` query parameterEPSS 1.4%CVE-2022-31112HIGHProtected fields exposed via LiveQuery in parse-serverEPSS 1.3%