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What are the severity rating and CVSS score of CVE-2026-79770?

The vulnerability CVE-2026-79770 has a severity score of 7.5 out of 10.0, which is classified as HIGH severity.

Which products and vendors are affected by CVE-2026-79770?

This vulnerability affects nokogiri from sparklemotion.

How can I mitigate or patch CVE-2026-79770?

Consult the vendor's security advisory for details and patches.

CVE-2026-79770: CVE-2026-79770 Vulnerability (HIGH Severity, CVSS: 7.5)

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.

Executive Summary

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Technical Details

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Mitigations

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References

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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Additional Metadata

{
  "score": "7.5",
  "pubDate": "2026-08-25T16:17:28.460Z",
  "pubdate": "2026-08-25T16:17:28.460Z"
}

Sceawere

CVE-2026-79770 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Narrative and Response

Description

Executive Summary

Technical Details

Mitigations

References

Additional Metadata