AUGUST 4, 2026
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Case File

CVE-2021-23663

MEDIUM · CVSS 6.5 EPSS 1.17%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-12-10 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.5. See the original NVD description below for full technical details.

CVE
CVE-2021-23663
Severity
MEDIUM
CVSS
6.5
EPSS
1.17%

Original NVD Description

All versions of package sey are vulnerable to Prototype Pollution via the deepmerge() function.