Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2021-39138

4.8 · MEDIUM

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js.

Published Aug 19, 2021CWE-287EPSS 0.99%

Overview

CVE-2021-39138 is a medium-severity vulnerability. It was published on August 19, 2021 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Developers can use the REST API to signup users and also allow users to login anonymously. Prior to version 4.5.1, when an anonymous user is first signed up using REST, the server creates session incorrectly. Particularly, the `authProvider` field in `_Session` class under `createdWith` shows the user logged in creating a password. If a developer later depends on the `createdWith` field to provide a different level of access between a password user and anonymous user, the server incorrectly classified the session type as being created with a `password`. The server does not currently use `createdWith` to make decisions about internal functions, so if a developer is not using `createdWith` directly, they are not affected. The vulnerability only affects users who depend on `createdWith` by using it directly. The issue is patched in Parse Server version 4.5.1. As a workaround, do not use

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/parse-community/parse-server/commit/147bd9a3dc43391e92c36e05d5db860b04ca27dbGitHubgithub.com/parse-community/parse-server/releases/tag/4.5.1GitHubgithub.com/parse-community/parse-server/security/advisories/GHSA-23r4-5mxp-c7g5GitHubgithub.com/parse-community/parse-server/commit/147bd9a3dc43391e92c36e05d5db860b04ca27dbGitHubgithub.com/parse-community/parse-server/releases/tag/4.5.1GitHubgithub.com/parse-community/parse-server/security/advisories/GHSA-23r4-5mxp-c7g5

How CyberStrike helps

Frequently asked questions

What is CVE-2021-39138?

CVE-2021-39138 is a medium-severity vulnerability. It was published on August 19, 2021 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

How severe is CVE-2021-39138?

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-39138?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-39138?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-39138 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related MEDIUM CVEs from 2021

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999