CVE-2022-41878Network attack vector

Authenticated code execution via post-trigger denylist bypass

Published Nov 10, 2022 · Updated Apr 23, 2025

Prototype pollution in Parse Server before 4.10.19 and 5.0.0 through 5.3.1 allows remote authenticated users to execute code. RestWrite scans request data for denied keys before Cloud Code runs, but affected builds do not rescan data returned by a trigger or webhook before saving it. Exploitation requires high-privilege API access, requestKeywordDenylist configuration, and an active Cloud Code trigger or webhook; code runs as the service account.

CVSS severity7.2
High
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Prototype pollution in Parse Server before 4.10.19 and 5.0.0 through 5.3.1 allows remote authenticated users to execute code. RestWrite scans request data for denied keys before Cloud Code runs, but affected builds do not rescan data returned by a trigger or webhook before saving it. Exploitation requires high-privilege API access, requestKeywordDenylist configuration, and an active Cloud Code trigger or webhook; code runs as the service account.

The record

CVE
CVE-2022-41878
Published
Nov 10, 2022
Updated
Apr 23, 2025
Vendor
Parse Platform
Product
Parse Server
Classifications
CWE-1321, CWE-74, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.10.19

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Parse Platform · Parse Serverversion=< 4.10.19

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.2GitHub CNACVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo