Red Hat WildFly Server Configuration take-snapshot name path traversal

Summaryinfo

A vulnerability classified as critical was found in Red Hat WildFly. This affects the function take-snapshot of the component Server Configuration. Such manipulation of the argument Name leads to path traversal. This vulnerability is uniquely identified as CVE-2026-84823. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Red Hat WildFly (version unknown). Affected by this issue is the function take-snapshot of the component Server Configuration. The manipulation of the argument name with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A flaw was found in WildFly. A user with the `Monitor` role, which is the lowest standard Role-Based Access Control (RBAC) role, can exploit a path traversal vulnerability in the `take-snapshot` operation. By manipulating the `name` parameter, this user can write a copy of the server configuration to an arbitrary location. This allows the `Monitor` role to read back the server configuration, including sensitive credentials, which would otherwise be restricted by RBAC, leading to information disclosure.

The advisory is available at access.redhat.com. This vulnerability is handled as CVE-2026-84823 since 09/02/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 10/16/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Application Server Software

Vendor

• Red Hat

Name

• WildFly

License

• open-source

Website

• Vendor: https://www.redhat.com/

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