CVE-2021-47987CWE-494

Parse Server - Arbitrary Code Execution via Malicious Version Tags

High · published June 25, 2026

CVSS v4.0
7.7
EPSS
0%
Percentile
7.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.7 · HIGH
Vector
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
EPSS
0.00178 · 7.0th percentile
Weakness
CWE-494 · Download of Code Without Integrity Check
Published
2026-06-25T21:41Z
EPSS history
Timeline
  • 25 JUN 21:41Z
    Parse Server - Arbitrary Code Execution via Malicious Version Tags
    cvelistv5