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Case File

CVE-2020-21524

CRITICAL · CVSS 9.1 EPSS 1.51% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-09-30 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. It affects WordPress, GitHub. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2020-21524
Severity
CRITICAL
CVSS
9.1
EPSS
1.51%
WordPress GitHub

Original NVD Description

There is a XML external entity (XXE) vulnerability in halo v1.1.3, The function of importing other blogs in the background(/api/admin/migrations/wordpress) needs to parse the xml file, but it is not used for security defense, This vulnerability can detect the intranet, read files, enable ddos attacks, etc. exp:https://github.com/halo-dev/halo/issues/423

Related CVEs

Other vulnerabilities affecting the same vendor(s)