Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-57434— Nokogiri: Null Pointer Dereference calling methods on uninitialized wrapper classes

Quick assessment

Affected
sparklemotion nokogiri
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sparkle Motion Nokogiri是Sparkle Motion个人开发者的一个HTML、XML和SAX解析库。 Sparkle Motion Nokogiri 1.19.4之前版本存在异常处理不当漏洞，该漏洞源于在某些继承自Nokogiri::XML::Node的已分配但未初始化的原生包装器类上调用特定方法时，导致空指针取消引用，可能使进程崩溃。

AI Predicted 5.3 Difficulty: Hard EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1112 · Modify Registry

Affected Version Matrix 1

VendorProduct Version RangeStatus
sparklemotion nokogiri < 1.19.4 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-57434

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Nokogiri: Null Pointer Dereference calling methods on uninitialized wrapper classes
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Sparkle Motion Nokogiri 异常处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sparkle Motion Nokogiri是Sparkle Motion个人开发者的一个HTML、XML和SAX解析库。 Sparkle Motion Nokogiri 1.19.4之前版本存在异常处理不当漏洞，该漏洞源于在某些继承自Nokogiri::XML::Node的已分配但未初始化的原生包装器类上调用特定方法时，导致空指针取消引用，可能使进程崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
sparklemotion nokogiri < 1.19.4 -

II. Public POCs for CVE-2026-57434

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-57434

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-57434 (1)

Same Patch Batch · sparklemotion · 2026-06-25 · 8 CVEs total

CVE-2026-57234 2.6 LOW Nokogiri: XML::Schema on JRuby allows network requests when NONET is set, bypassing CVE-20
CVE-2026-57438 Nokogiri: Possible Use-After-Free in XInclude Processing
CVE-2026-57236 Nokogiri: Possible Use-After-Free when `Nokogiri::XML::Document#encoding=` raises an excep
CVE-2026-57437 Nokogiri: Possible Use-After-Free when directly using `NokogirI::XML::XPathContext` beyond
CVE-2026-57235 Nokogiri: Possible Out-of-Bounds Read in `Nokogiri::XML::NodeSet#[]`
CVE-2026-57436 Nokogiri: Possible Use-After-Free when setting `Document#root=` to an invalid node type
CVE-2026-57435 Nokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr

IV. Related Vulnerabilities

Same product: nokogiri
Same vendor: sparklemotion
Same weakness: CWE-476

V. Comments for CVE-2026-57434

No comments yet

Leave a comment