CVE-2026-57434

Name: CVE-2026-57434
Creator: NVD / NIST
Published: 2026-06-25T15:16:40.86+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.7/10

Last modified Jun 26, 2026

CVE-2026-57434 is a low-severity vulnerability rated 1.7/10 on the CVSS scale. Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri contains a bug when calling certain methods on allocated-but-uninitialized native wrapper classes that inherit from Nokogiri::XML::Node.

Description

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri contains a bug when calling certain methods on allocated-but-uninitialized native wrapper classes that inherit from Nokogiri::XML::Node. This caused a NULL pointer dereference that could crash the process. This vulnerability is fixed in 1.19.4.

Metrics

CVSS 3.1

7.5/10

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

CVSS 4.0

1.7/10

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.0

/10

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Nokogiri	Nokogiri	< 1.19.4

References

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-9cv2-cfxc-v4v2Mitigation, Vendor Advisory

Timeline

Published: Jun 25, 2026
Last Modified: Jun 26, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-57434?

How severe is CVE-2026-57434?

CVE-2026-57434 has a CVSS score of 1.7/10 (LOW severity).

How do I fix CVE-2026-57434?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-57434?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST