CVE•Published 2026-06-25•Modified 2026-10-25•0 articles on news•4 live references•NVD data

CVE-2026-57435Nokogiri · 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 61% of all CVEs

Weaknesses (CWE)

CWE-416Use After Free CWE-825Expired Pointer Dereference

Description

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri’s CRuby native extension could leave a Ruby wrapper pointing to freed memory when replacing the value of an XML attribute. If Ruby code had already accessed an attribute child node, Nokogiri::XML::Attr#value= could free the underlying native child node while the wrapper remained reachable through the document node cache. A later use of the freed child node or a Ruby GC mark could dereference an invalid pointer, causing an invalid read and a possible segfault. This vulnerability is fixed in 1.19.4.

Timeline

Published 2026-06-25

Modified 2026-10-25

External references

NVD MITRE Exploit-DB 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-2026-57435

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-2026-57435