Nokogiri
CVE-2022-24836
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource consumption limits
MITRE ATT&CK
1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could cause denial of service by exhausting system resources by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
Nokogiri is an open source XML and HTML library for Ruby. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Uncontrolled Resource Consumption vulnerability could allow attackers to cause denial of service by exhausting system resources.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Implement rate limiting, set resource quotas, validate input sizes, use timeouts.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in rubygems
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Uncontrolled Resource Consumption (CWE-400), which allows attackers to cause denial of service by exhausting system resources. Nokogiri is an open source XML and HTML library for Ruby. Nokogiri < v1.13.4 contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to detect encoding in HTML documents. Users are advised to upgrade to Nokogiri >= 1.13.4. There are no known workarounds for this issue. Affected products include: Nokogiri, Fedoraproject Fedora, Debian Debian Linux, Apple Macos.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Nokogiri is an open source XML and HTML library for Ruby. Nokogiri < v1.13.4 contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to detect encoding in HTML documents. Users are advised to upgrade to Nokogiri >= 1.13.4. There are no known workarounds for this issue.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
Nokogiri is an open source XML and HTML library for Ruby. Rated high severity (CVSS 8.2), this vulnerability is remotely
A command injection vulnerability in Nokogiri v1.10.3 and earlier allows commands to be executed in a subprocess via Rub
Denial-of-service in Nokogiri before 1.19.3 stems from three distinct ReDoS vulnerabilities in the CSS selector tokenize
Out-of-bounds memory read in Nokogiri (CRuby) versions before 1.19.4 crashes the host Ruby process when application code
Nokogiri is an open source XML and HTML library for the Ruby programming language. Rated high severity (CVSS 7.5), this
Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. Rated high sever
Heap memory leaks in Nokogiri's XSLT transform method (versions before 1.19.3) enable gradual denial of service against
Unchecked return value in Nokogiri's CRuby extension (versions 1.5.1 through 1.19.0) causes the `canonicalize` method to
Out-of-bounds read in Nokogiri's `NodeSet#[]` method (all versions before 1.19.4) enables an attacker who can supply a l
Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. Rated medium sev
NONET network restriction bypass in Nokogiri's JRuby implementation permits external resource fetching during XML Schema
Use-after-free in Nokogiri's CRuby XInclude processing (versions prior to 1.19.4) can leave Ruby wrapper objects pointin
Exploit-DB