parse-community parse-server up to 8.6.46/9.6.0-alpha.23 prototype pollution

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in parse-community parse-server up to 8.6.46/9.6.0-alpha.23. Impacted is an unknown function. Such manipulation leads to prototype pollution. This vulnerability is referenced as CVE-2026-32886. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in parse-community parse-server up to 8.6.46/9.6.0-alpha.23. It has been rated as problematic. Affected by this issue is an unknown part. The manipulation with an unknown input leads to a prototype pollution vulnerability. Using CWE to declare the problem leads to CWE-1321. The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. Impacted is availability. CVE summarizes:

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.24 and 8.6.47, remote clients can crash the Parse Server process by calling a cloud function endpoint with a crafted function name that traverses the JavaScript prototype chain of a registered cloud function handler, causing a stack overflow. The fix in versions 9.6.0-alpha.24 and 8.6.47 restricts property lookups during cloud function name resolution to own properties only, preventing prototype chain traversal from stored function handlers. There is no known workaround.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-32886 since 03/16/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.

Upgrading to version 8.6.47 or 9.6.0-alpha.24 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Prototype pollution
CWE: CWE-1321 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: parse-server 8.6.47/9.6.0-alpha.24
Patch: github.com

Timelineinfo

03/16/2026 CVE reserved
03/18/2026 +2 days Advisory disclosed
03/18/2026 +0 days VulDB entry created
03/23/2026 +5 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-4263-jgmp-7pf4
Status: Confirmed

CVE: CVE-2026-32886 (🔒)
GCVE (CVE): GCVE-0-2026-32886
GCVE (VulDB): GCVE-100-351620

Entryinfo

Created: 03/18/2026 23:49
Updated: 03/23/2026 20:28
Changes: 03/18/2026 23:49 (67), 03/22/2026 14:15 (11), 03/23/2026 20:28 (1)
Complete: 🔍
Cache ID: 216::103

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