CVE•Published 2026-08-25•Modified 2026-09-01•0 articles on news•5 live references•NVD data

CVE-2026-79770Nokogiri · Nokogiri

Vulnerability data via NVD (ingested)

CVSS v3.1

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS percentile

Exploit Prediction Scoring System · top 80% of all CVEs

Weaknesses (CWE)

CWE-1333Inefficient Regular Expression Complexity

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.

Timeline

Published 2026-08-25

Modified 2026-09-01

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-79770

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Nokogiri Nokogiri"

All exposed Nokogiri Nokogiri instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Nokogiri"

HTTP body or banner mentions "Nokogiri" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-79770