What’s Vulnerable › Vulnerabilities

CVE-2022-41879: Parse Server subject to Prototype pollution via Cloud Code Webhooks

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-11-10 · updated 2026-06-17
• Weakness: CWE-1321

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. In versions prior to 5.3.3 or 4.10.20, a compromised Parse Server Cloud Code Webhook target endpoint allows an attacker to use prototype pollution to bypass the Parse Server `requestKeywordDenylist` option. This issue has been patched in versions 5.3.3 and 4.10.20. There are no known workarounds.

Affected products

• parse-community parse-server: before 4.10.20; from 5.0.0 before 5.3.3 — fixed in 4.10.20, 5.3.3

How to fix

Upgrade to a fixed version: parse-community parse-server 4.10.20, 5.3.3. Check the vendor advisory for mitigations.

References

• https://github.com/parse-community/parse-server/security/advisories/GHSA-93vw-8fm5-p2jf
• https://github.com/parse-community/parse-server/security/advisories/GHSA-93vw-8fm5-p2jf

Get alerted when CVE-2022-41879 or the next vulnerability affects your stack