CVE-2026-84823 Red Hat CVE debrief

Who should care

Defenders responsible for WildFly deployments, particularly those with users assigned the Monitor role, should assess exposure and verify the impact of this vulnerability on their systems.

Why it matters

A path traversal vulnerability in WildFly allows a user with the Monitor role to write the server configuration to an arbitrary location, leading to information disclosure. Defenders responsible for WildFly deployments should assess exposure and verify the impact of this vulnerability on their systems.

• Defenders must verify exposure and assess the impact of this vulnerability on WildFly deployments
• Restricting access to sensitive credentials and server configuration is crucial to prevent information disclosure
• Defenders should prioritize remediation of this vulnerability to prevent potential information disclosure

Technical summary

A flaw in the take-snapshot operation of WildFly allows a user with the Monitor role to exploit a path traversal vulnerability, leading to information disclosure. The vulnerability is caused by a flaw in the take-snapshot operation, which can be exploited by manipulating the name parameter. This allows the Monitor role to read back the server configuration, including sensitive credentials, which would otherwise be restricted by Role-Based Access Control (RBAC). Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems, particularly those with WildFly deployments.

Defensive priority

Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems, particularly those with WildFly deployments.

Recommended defensive actions

• Verify WildFly deployments for exposure to this vulnerability
• Assess the impact of this vulnerability on systems with WildFly deployments
• Restrict access to sensitive credentials and server configuration
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and references to source-specific vulnerability assessments. The vulnerability allows a user with the Monitor role to exploit a path traversal vulnerability in the take-snapshot operation, leading to information disclosure. Defenders should verify exposure and assess the impact of this vulnerability on their systems, particularly those with WildFly deployments. The CVE Program record and NVD entry provide source-provided CVE and

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.