AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2019-5477

CRITICAL · CVSS 9.8 EPSS 5.90% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-08-16 · 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-2019-5477
Severity
CRITICAL
CVSS
9.8
EPSS
5.90%

Original NVD Description

A command injection vulnerability in Nokogiri v1.10.3 and earlier allows commands to be executed in a subprocess via Ruby's `Kernel.open` method. Processes are vulnerable only if the undocumented method `Nokogiri::CSS::Tokenizer#load_file` is being called with unsafe user input as the filename. This vulnerability appears in code generated by the Rexical gem versions v1.0.6 and earlier. Rexical is used by Nokogiri to generate lexical scanner code for parsing CSS queries. The underlying vulnerability was addressed in Rexical v1.0.7 and Nokogiri upgraded to this version of Rexical in Nokogiri v1.10.4.

Related CVEs

Other vulnerabilities affecting the same vendor(s)