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Fencer Vulns
critical 9.8

CVE-2023-36475 json

Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution

published 2023-06-28 3 y ago modified 2026-09-10 1 mo ago also BIT-parse-2023-36475 , EUVD-2023-1678 , GHSA-462x-c3jw-7vr6

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 5.5.2 and 6.2.1, an attacker can use a prototype pollution sink to trigger a remote code execution through the MongoDB BSON parser. A patch is available in versions 5.5.2 and 6.2.1.

Patch / fix

  • npm parse-server 5.5.2, 6.2.1
  • bitnami parse 5.5.2, 6.2.1
  • parseplatform parse-server 5.5.2, 6.2.1

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
23 mo ago

Exploit prediction

3.20% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
npm parse-server
<5.5.2
>=6.0.0, <6.2.1
5.5.2
6.2.1
bitnami parse
<5.5.2
>=6.0.0, <6.2.1
5.5.2
6.2.1

Affected products

  • parse-community parse-server

Classification

Weakness
  • CWE-1321 Improperly Controlled Modification of Object Prototype Attributes

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.