CVE-2026-57435
7.5 · HIGHOverview
CVE-2026-57435 is a high-severity vulnerability affecting nokogiri nokogiri. It was published on June 25, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from nokogiri. Update nokogiri to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| nokogiri | nokogiri | >= 0, < 1.19.4 | Affected |
Frequently Asked Questions
What is CVE-2026-57435?
CVE-2026-57435 is a high-severity vulnerability affecting nokogiri nokogiri. It was published on June 25, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-57435?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-57435?
Check the references section for vendor advisories and patches from nokogiri. Update nokogiri to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-57435?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-57435 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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