CVE-2026-57438CWE-416

Nokogiri: Possible Use-After-Free in XInclude Processing

Low · published June 25, 2026

CVSS v4.0
2.2
EPSS
0%
Percentile
2.0
In the wild
Unconfirmed
What it is

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, XInclude substitution performed by Nokogiri::XML::Node#do_xinclude replaced each <xi:include> in place, freeing the include node along with its children (such as <xi:fallback> and its descendants) and any namespaces declared on them. If an application had already exposed one of those nodes or namespaces to Ruby, the corresponding Ruby object was left pointing at freed memory. Using the object could result in invalid reads or writes to memory. This vulnerability is fixed in 1.19.4.

The record
Technical detail
CVSS v4.0
2.2 · LOW
Vector
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U
EPSS
0.00125 · 2.0th percentile
Weakness
CWE-416 · Use After Free
Published
2026-06-25T14:39Z
EPSS history
Timeline
  • 25 JUN 14:39Z
    Nokogiri: Possible Use-After-Free in XInclude Processing
    cvelistv5