CVE-2026-126064
Published:November 10, 2026
Updated:November 13, 2026
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.5, the CRuby native extension can leave Ruby wrappers pointing to freed memory when Nokogiri::XML::Node#[]= or Nokogiri::XML::Node#lang= replaces an existing attribute value after code has accessed the attribute's child nodes. Replacing the value frees native child nodes while their wrappers remain reachable, and later use of those wrappers can cause an invalid read or process segfault. JRuby is not affected. This issue is fixed in version 1.19.5.
Affected Packages
https://github.com/sparklemotion/nokogiri.git (GITHUB):
Affected version(s) >=REL_1.0.0 <v1.19.5 || >=v1.4.4 <v1.19.5Fix Suggestion:
Update to version v1.19.5nokogiri (RUBY):
Affected version(s) >=1.0.0 <1.19.5Fix Suggestion:
Update to version 1.19.5Related Resources (9)
Do you need more information?
Contact UsCVSS v4
Base Score:
2
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
2.5
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Use After Free
EPSS
Base Score:
0.15