ruby-nokogiri: Nokogiri versions before 1.19.3 contain regular expression denial of service vulnerabilities in the CSS selector toke...
CVE-2026-79770 is fixed in ruby-nokogiri on 1 platform by DEBIAN-CVE-2026-79770 (version 1.19.3+dfsg-1), released August 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Nokogiri versions before 1.19.3 contain regular expression denial of service vulnerabilities in the CSS selector tokenizer affecting string-literal and identifier tokenization. Attackers can inject adversarial CSS selectors into methods like Node#css, Node#at_css, and Searchable#search to cause exponential regex backtracking and denial of service.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ruby-nokogiri · Debian 14 | 1.19.3+dfsg-1 | DEBIAN-CVE-2026-79770 | Aug 27, 2026 |
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