CVE-2022-39396
CWE-1321Published: November 10, 2022· Updated: Jun 17, 2026
Official Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Versions prior to 4.10.18, and prior to 5.3.1 on the 5.X branch, are vulnerable to Remote Code Execution via prototype pollution. An attacker can use this prototype pollution sink to trigger a remote code execution through the MongoDB BSON parser. This issue is patched in version 5.3.1 and in 4.10.18. There are no known workarounds.
Risk Analysis
Parse Server is vulnerable to remote code execution via prototype pollution that triggers the MongoDB BSON parser. This critical flaw allows an attacker to execute arbitrary code on the server.
No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable with low complexity.
Upgrade to Parse Server version 5.3.1 or 4.10.18 to address the vulnerability.
Technical Analysis
CVE-2022-39396 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-1321)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-39396 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts