Get a demo Acunetix Website Security Scanner Get a demo
  • Product
  • Why Acunetix?
    • Solutions
      • INDUSTRIES
        • IT & Telecom
        • Government
        • Financial Services
        • Education
        • Healthcare
      • ROLES
        • CTO & CISO
        • Engineering Manager
        • Security Engineer
        • DevSecOps
    • Case Studies
    • Customers
    • Testimonials
  • Pricing
  • About Us
    • Our story
    • In the news
    • Careers
    • Contact
  • Resources
    • Blog
    • Webinars
    • White papers
    • Buyer’s guide
    • Partners
    • Support
  • Get a demo
WEB APPLICATION VULNERABILITIES Standard & Premium

Undertow Exposure of Resource to Wrong Sphere Vulnerability (CVE-2021-3859)

Description

A flaw was found in Undertow that tripped the client-side invocation timeout with certain calls made over HTTP2. This flaw allows an attacker to carry out denial of service attacks.

Remediation

References

CVE-2021-3859

Related Vulnerabilities

WordPress Plugin Business Hours Pro Arbitrary File Upload (5.5.0)

WordPress Plugin Advanced Custom Fields PRO Multiple Security Bypass Vulnerabilities (5.10)

WordPress Plugin Ajax Search Lite Security Bypass (3.1)

Joomla Other Vulnerability (CVE-2005-3771)

WordPress Plugin WP Maps-Display Google Maps Perfectly with Ease Cross-Site Request Forgery (4.4.2)

Severity

High

Classification

CVE-2021-3859 CWE-668 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Tags

Missing Update Known Vulnerabilities

Take action and discover your vulnerabilities

Get a demo
Client: AWS
Client: Cognizant
Client: Garmin
Client: Airforce
Client: NASA
Client: American Express
Product Information
  • AcuSensor Technology
  • AcuMonitor Technology
  • Acunetix Integrations
  • Vulnerability Scanner
  • Support Plans
Use Cases
  • Penetration Testing Software
  • Website Security Scanner
  • External Vulnerability Scanner
  • Web Application Security
  • Vulnerability Management Software
Website Security
  • Cross-site Scripting
  • SQL Injection
  • Reflected XSS
  • CSRF Attacks
  • Directory Traversal
Learn More
  • White Papers
  • TLS Security
  • WordPress Security
  • Web Service Security
  • Prevent SQL Injection
Company
  • About Us
  • Customers
  • Become a Partner
  • Careers
  • Contact
Documentation
  • Case Studies
  • Support
  • Videos
  • Vulnerability Index
  • Webinars
  • Login
  • Invicti Subscription Services Agreement
  • Privacy Policy
  • Terms of Use
  • Sitemap
  • Find us on Facebook
  • Follow us on Twiter
  • Follow us on LinkedIn

© Acunetix 2025, by Invicti