# CVE-2021-47987

## Summary

- **CVE ID:** CVE-2021-47987
- **Severity:** HIGH
- **CVSS Score:** 7.7 (CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-494
- **Published:** Jun 25, 2026
- **Last Modified:** Jun 26, 2026

## Description

Parse Server before 4.10.0 was affected by a supply chain incident in which incorrect version tags were pushed to the official repository pointing to an unreviewed personal fork of a contributor with write access. No releases were published with these tags; a project was exposed only if it defined a git-based dependency referencing one of the affected tags (for example, parse-server#4.9.3). The code behind the tags was not reviewed or approved, and although no malicious code was identified, the introduction of security vulnerabilities could not be ruled out.

## Affected Products

- parse-community — parse-server (0)
- parse-community — parse-server (4.10.0)

## References

- [CNA](https://github.com/parse-community/parse-server/security/advisories/GHSA-593v-wcqx-hq2w)
- [CNA](https://www.vulncheck.com/advisories/parse-server-arbitrary-code-execution-via-malicious-version-tags)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 7.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._