CVE-2026-82898 Apache Software Foundation CVE debrief

Who should care

Defenders and administrators of Apache Wicket applications should be aware of this vulnerability and take necessary actions to upgrade to the patched versions and review security configurations.

Why it matters

CVE-2026-82898 is a vulnerability in Apache Wicket that can lead to unauthorized access to sensitive information. Defenders should prioritize upgrading to the patched versions and review security configurations to prevent potential security breaches.

• Potential unauthorized access to sensitive information
• Possible bypass of security checks
• Required upgrade to patched versions
• Need for review and update of security configurations

Technical summary

The vulnerability is caused by the incorrect order of security checks in the ResourceIsolationRequestCycleListener class. The listener obtains the page a request targets before consulting its resource isolation policies, which can lead to unauthorized access to sensitive information. This issue affects Apache Wicket versions from 9.1.0 through 9.24.0 and from 10.0.0 through 10.11.0. Users are recommended to upgrade to version 9.25.0 or 10.12.0, which fix the issue. The incorrect order of checks allows an attacker to bypass security checks and potentially access sensitive information.

Defensive priority

Defenders should prioritize upgrading to the patched versions of Apache Wicket, specifically 9.25.0 or 10.12.0, to prevent potential unauthorized access to sensitive information.

Recommended defensive actions

• Upgrade to Apache Wicket version 9.25.0 or 10.12.0
• Review and update security configurations for ResourceIsolationRequestCycleListener
• Monitor for suspicious activity and implement additional security measures as needed
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The vulnerability is caused by the incorrect order of security checks in the ResourceIsolationRequestCycleListener class. The listener obtains the page a request targets before consulting its resource isolation policies, which can lead to unauthorized access to sensitive information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.