Is CVE-2026-57235 actively exploited?

No active exploitation of CVE-2026-57235 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-57235 be exploited remotely?

Yes. CVE-2026-57235 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-57235?

CVE-2026-57235 has a CVSS score of 8.2 (HIGH).

HOME VULNERABILITIESCVE-2026-57235

HIGH

CVE-2026-57235

CWE-125Published: June 25, 2026· Updated: Jun 26, 2026

8.2

CVSS v3.1

EPSS:0.33%probability of exploitation in 30 daysPercentile:25.0th

Official 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.

NVD Source

Technical Analysis

CVE-2026-57235 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 8.2.