CVE•Published 2026-06-25•Modified 2026-06-26•1 article on news•5 live references•NVD data

CVE-2026-57235Nokogiri · Nokogiri

Vulnerability data via NVD (ingested)

CVSS v3.1

8.2

HIGH

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

EPSS percentile

—

Weaknesses (CWE)

CWE-125Out-of-bounds Read CWE-190Integer Overflow or Wraparound

Description

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::NodeSet#[] (and its alias #slice) checked the requested index against the node set's bounds using a 32-bit-truncated copy of the index. A large negative index could pass the check and then be used at full width, reading outside the node set's storage. On CRuby this is an out-of-bounds read that typically crashes the process; on JRuby it is not memory-unsafe but returns an incorrect node. This vulnerability is fixed in 1.19.4.

Timeline

Published 2026-06-25

Modified 2026-06-26

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-2026-57235

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-2026-57235