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High

DNS based denial of service in Apache Wicket

  • Disclosed: 24.05.2022
  • Updated: 11.10.2026 11:22

A DNS proxy and possible amplification attack vulnerability in WebClientInfo of Apache Wicket allows an attacker to trigger arbitrary DNS lookups from the server when the X-Forwarded-For header is not properly sanitized. This DNS lookup can be engineered to overload an internal DNS server or to slow down request processing of the Apache Wicket application causing a possible denial of service on either the internal infrastructure or the web application itself. This issue affects Apache Wicket Apache Wicket 9.x version 9.2.0 and prior versions; Apache Wicket 8.x version 8.11.0 and prior versions; Apache Wicket 7.x version 7.17.0 and prior versions and Apache Wicket 6.x version 6.2.0 and later versions.

Affected software

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PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.apache.wicket:wicket-core >= 9.0.0, < 9.3.0, >= 8.0.0, < 8.12.0, < 7.18.0 9.3.0, 8.12.0, 7.18.0

References

CVSS score 7.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-20
Platform
Java / Kotlin (Maven)
Package
org.apache.wicket:wicket-core
Disclosed
24.05.2022
Updated
11.10.2026 11:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-hmhg-95wh-r699 - CC BY 4.0

Vulnerability history: org.apache.wicket:wicket-core

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
8
First → latest
05.2021 05.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 5
  • Medium 3

Disclosures per year

  1. Apache Wicket has a Path Traversal issue
    Medium · 6.5 CVE-2026-43975 >= 8.0.0-M1, <= 8.17.0, >= 9.0.0-M1, <= 9.22.0, >= 10.0.0-M1, < 10.9.0 10.9.0
  2. Apache Wicket: An attacker can intentionally trigger a memory leak
    Medium · 6.5 CVE-2024-53299 >= 7.0.0, < 8.17.0, >= 10.0.0, < 10.3.0, >= 9.0.0-M1, < 9.19.0 8.17.0, 10.3.0, 9.19.0
  3. DNS based denial of service in Apache Wicket this entry
    High · 7.5 CVE-2021-23937 >= 9.0.0, < 9.3.0, >= 8.0.0, < 8.12.0, < 7.18.0 9.3.0, 8.12.0, 7.18.0
  4. Apache Wicket allows attackers to check for third-party libraries
    Medium · 5.3 CVE-2014-0043 >= 1.5-RC1, < 1.5.11, >= 6.0.0-beta1, < 6.14.0 1.5.11, 6.14.0
  5. Apache Wicket vulnerable to CSRF attacks
    High · 8.8 CVE-2016-6806 >= 6.20.0, < 6.25.0, >= 7.0.0, < 7.5.0, >= 8.0.0-M1, < 8.0.0-M2 6.25.0, 7.5.0, 8.0.0-M2
  6. Apache Wicket Sensitive Data Exposure
    High · 7.5 CVE-2014-3526 < 1.5.12, >= 6.0, < 6.17.0, >= 7.0.0-M1, < 7.0.0-M3 1.5.12, 6.17.0, 7.0.0-M3
  7. Apache Wicket insecure defaults
    High · 7.5 CVE-2014-7808 < 1.5.13, >= 6.0.0-beta1, < 6.19.0, >= 7.0.0-M1, < 7.0.0-M5 1.5.13, 6.19.0, 7.0.0-M5
  8. Exposure of Sensitive Information to an Unauthorized Actor in Apache Wicket
    High · 7.5 CVE-2020-11976 < 7.17.0, >= 8.0.0, < 8.9.0, >= 9.0.0-M1, < 9.0.0, >= 9.0.0-M2, < 9.0.0, >= 9.0.0-M3, < 9.0.0, >= 9.0.0-M4, < 9.0.0, >= 9.0.0-M5, < 9.0.0 7.17.0, 8.9.0, 9.0.0

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