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CVE-2022-39396

52
FAUCET Score

CVE-2022-39396 is a critical Remote Code Execution (RCE) vulnerability affecting Parse Server versions prior to 4.10.18 and 5.3.1. This flaw stems from prototype pollution, which attackers can leverage to trigger RCE through the MongoDB BSON parser. With a CVSS score of 9.8 (CRITICAL), this vulnerability allows unauthenticated attackers to execute arbitrary code remotely with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While there are no known public exploits or Metasploit/Nuclei modules, the vulnerability has garnered some community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.10.18CPE matchmatch criteria
cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*
>= 5.0.0, < 5.3.1CPE matchmatch criteria
cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
38.72%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.3872 is in the 96th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

npmpatch availablevia ghsa
Product: parse-serverFixed in: 4.10.18
npmpatch availablevia ghsa
Product: parse-serverFixed in: 5.3.1

Vendor Advisories (1)

npmGHSA-prm5-8g2m-24ggcritical

Remote code execution via MongoDB BSON parser through prototype pollution

Nov 8, 2022

References

github.com / parse-community/parse-server/security/advisories/GHSA-prm5-8g2m-24gg
Third Party Advisory