File Path Validation Flaw in Apache Wicket Affects Multiple Versions
CVE-2026-84177

6.3MEDIUM

Key Information:

Vendor

Apache
Status
Apache Wicket
Vendor
CVE Published:
1 November 2026

What is CVE-2026-84177?

This vulnerability in Apache Wicket arises from the incorrect order of behavior in handling file paths. The framework improperly validates paths before appending additional attributes, potentially allowing unauthorized access to HTML files through intended markup templates. Applications with component class names containing underscores may be susceptible, as incorrect validation can expose developer-authored template content. It is crucial for users to upgrade to versions 8.20.0, 9.25.0, or 10.12.0 to mitigate this risk.

Affected Version(s)

Apache Wicket 8.0.0 <= 8.19.0

Apache Wicket 9.0.0 <= 9.24.0

Apache Wicket 10.0.0 <= 10.11.0

References

https://lists.apache.org/thread.html/hy089v60t5v36skpnbry...
vendor-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Emond Papegaaij
.