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Case File

CVE-2021-23899

CRITICAL · CVSS 9.8 EPSS 2.07% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-01-13 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. 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.

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

CVE
CVE-2021-23899
Severity
CRITICAL
CVSS
9.8
EPSS
2.07%

Original NVD Description

OWASP json-sanitizer before 1.2.2 may emit closing SCRIPT tags and CDATA section delimiters for crafted input. This allows an attacker to inject arbitrary HTML or XML into embedding documents.

Related CVEs

Other vulnerabilities affecting the same vendor(s)