GHSA-5JHF-FPP7-V2PV: nokogiri RubyGems
Vulnerability summary
GHSA-5JHF-FPP7-V2PV is a high (CVSS 8.7) vulnerability in nokogiri RubyGems.
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 25-08-2026PublishedVulnerability first disclosed.
- 10-09-2026Last modifiedVulnerability information updated.
Description
Duplicate Advisory: Nokogiri CSS selector tokenizer has regular expression backtracking ## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-c4rq-3m3g-8wgx. This link is maintained to preserve external references. ## Original 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 metrics
2 scores · 1 source · 2 versionsEPSS trend
No EPSS score has been published for this record yet.
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
RubyGems1 product
- nokogiriAll versions (No fix recorded)
1 vendor · 1 product
