Path Traversal Vulnerability in WildFly Affects User Access Control
CVE-2026-84823

7.1HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat Fuse 7
Red Hat Jboss Enterprise Application Platform 7
Vendor
CVE Published:
15 October 2026

What is CVE-2026-84823?

A vulnerability exists in WildFly that allows users with the Monitor role to exploit a path traversal flaw during the take-snapshot operation. By manipulating the name parameter, attackers can write copies of server configurations to unauthorized locations, making sensitive information—such as credentials—readable. This breach occurs despite existing Role-Based Access Control (RBAC) restrictions, posing a significant risk to server security.

References

https://access.redhat.com/security/cve/CVE-2026-84823
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2527902
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Hung Bach Ngoc (VinSOC Labs) for reporting this issue.
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