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Case File

CVE-2018-20583

MEDIUM · CVSS 6.1 EPSS 1.60% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2018-12-30 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

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

GitHub PoC Links
github.com ↗ github.com ↗

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

CVE
CVE-2018-20583
Severity
MEDIUM
CVSS
6.1
EPSS
1.60%
Java

Original NVD Description

Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library versions 0.15.6 through 0.18.x before 0.18.1 allows remote attackers to insert unsafe URLs into HTML (even if allow_unsafe_links is false) via a newline character (e.g., writing javascript as javascri%0apt).