Description
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.
CVSS 7.5EPSS 0.27799999999999997%Risk 0.77
View source- Published
- 2026-08-25 16:17:28
- Affected versions
- <1.19.3
- Type
- Library
- Last modified
- 2026-08-25 17:18:17
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H