CVE-2024-58378Network attack vectorHinoki check available

Invalid memory access via xmlValidatePopElement use-after-free

Published Aug 25, 2026 · Updated Aug 28, 2026

Use-after-free in Nokogiri before 1.15.6 and 1.16.0 through 1.16.1 allows remote attackers to trigger invalid memory access via crafted XML. The libxml2 xmlTextReader path reaches an xmlValidatePopElement use-after-free while processing the document. Exposure requires CRuby with packaged libxml2 and an application that passes attacker-controlled XML to Nokogiri::XML::Reader with DTD validation and XInclude expansion enabled; JRuby and system-libxml2 builds are unaffected.

CVSS severity9.3
Critical
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in Nokogiri before 1.15.6 and 1.16.0 through 1.16.1 allows remote attackers to trigger invalid memory access via crafted XML. The libxml2 xmlTextReader path reaches an xmlValidatePopElement use-after-free while processing the document. Exposure requires CRuby with packaged libxml2 and an application that passes attacker-controlled XML to Nokogiri::XML::Reader with DTD validation and XInclude expansion enabled; JRuby and system-libxml2 builds are unaffected.

The record

CVE
CVE-2024-58378
Published
Aug 25, 2026
Updated
Aug 28, 2026
Vendor
Sparkle Motion
Product
Nokogiri
Classifications
CWE-416
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.15.6
  2. Affected versionversion=1.16.0 <1.16.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sparkle Motion · Nokogiriversion=0 <1.15.6; version=1.16.0 <1.16.2

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo