What’s Vulnerable › Vulnerabilities

CVE-2021-47986: Parse Server - Unreviewed Code Execution via Malicious Version Tags

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-25 · updated 2026-07-30
• Weakness: CWE-494

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.

Affected products

• parse-community parse-server: 4.0.0-beta1, 4.0.0-beta2, 4.0.0-beta3, 4.0.0-beta4, 4.0.0-beta5, 4.0.0-beta6 (+24)

References

• https://github.com/parse-community/parse-server/security/advisories/GHSA-593v-wcqx-hq2w
• https://www.vulncheck.com/advisories/parse-server-unreviewed-code-execution-via-malicious-version-tags

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