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OpenAdvisories

Package · Debian

ruby-css-parser

2 known vulnerabilities.

All Critical High Medium Low Exploited only

2 results · Feed

  • High 8.9
    CVE-2026-53727

    css_parser: SSRF and Local File Disclosure in `CssParser::Parser#read_remote_file`

    css_parser is a Ruby CSS parser. From 2.2.0 until 3.0.0, CssParser::Parser#read_remote_file in lib/css_parser/parser.rb, and therefore load_uri! and the @import-following branch of add_block!, issued HTTP and HTTPS requests against any host, port, and URI wit…

    premailer css_parser css_parser ruby-css-parser Debian Ubuntu RubyGems
  • Medium 5.8
    CVE-2026-44312

    css_parser allows to MITM included https css urls

    css_parser is a Ruby CSS parser. Prior to 2.1.0 and 1.22.0, the CSS Parser gem does not validate HTTPS connections, allowing a Man-in-the-Middle (MITM) attacker to inject or modify CSS content when stylesheets are loaded via HTTPS. The connection is establish…

    premailer css_parser ruby-css-parser css_parser Debian Ubuntu RubyGems