CVE-2021-47986 Parse Server - Unreviewed Code Execution via Malicious Version Tags
Attackers can execute malicious code by exploiting incorrect version tags in Parse Server dependencies, requiring users to upgrade to secure versions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-47986?
CVE-2021-47986 is a high-severity vulnerability in Parseplatform Parse-Server, published on 25 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Parse Server before 4.10.0 contains a supply chain vulnerability where incorrect version tags were pushed to the repository linking to unreviewed code in a personal fork. Attackers could exploit this by specifying affected version tags in dependency declarations to execute unreviewed and potentially malicious code.
Weakness: CWE-494
Which versions are affected by CVE-2021-47986?
It affects 1 product.
Products include Parseplatform Parse-Server.
How do I fix CVE-2021-47986?
Upgrade to a fixed version.
Is CVE-2021-47986 being exploited?
There is no known exploitation of CVE-2021-47986 in the wild and no public exploit code.
Other vulnerabilities in Parseplatform Parse-Server
- CVE-2026-30966 Parse Server role escalation and CLP bypass via direct `_Join` table write
- CVE-2024-27298 Parse Server literalizeRegexPart SQL Injection
- CVE-2022-24760 Command Injection in Parse server
- CVE-2026-30965 Parse Server session token exfiltration via `redirectClassNameForKey` query parameter
- CVE-2023-36475 Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution
Sources
Also known as GHSA-g938-h978-wf7v.