CVE-2026-84823
A flaw was found in WildFly.
Published Oct 15, 2026 · corrected/updated Oct 16, 2026 · Red Hat Red Hat Enterprise Linux 8 · evidence confidence medium
A flaw was found in WildFly. A user with the role, which is the lowest standard Role-Based Access Control (RBAC) role, can exploit a path traversal vulnerability in the operation. By manipulating the parameter, this user can write a copy of the server configuration to an arbitrary location. This allows the role to read back the server configuration, including sensitive credentials, which would otherwise be restricted by RBAC, leading to information disclosure.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-84823 is a high public vulnerability record for Red Hat Red Hat Enterprise Linux 8. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether Red Hat Red Hat Enterprise Linux 8 is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: Red Hat Red Hat Enterprise Linux 8; Red Hat Red Hat Enterprise Linux 9; Red Hat Red Hat Fuse 7. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 7.1. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-22. Sources contributing to this record: cve_org, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 16, 2026 · NIST NVD
Detected
A flaw was found in WildFly. A user with the role, which is the lowest standard Role-Based Access Control (RBAC) role, can exploit a path traversal vulnerability in the operation. By manipulating the parameter, this user can write a copy of the server configuration to an arbitrary location. This allows the role to read back the server configuration, including sensitive credentials, which would oth
Affected
- vendor Red Hat Red Hat Enterprise Linux 8version unspecified
- vendor Red Hat Red Hat Enterprise Linux 9version unspecified
- vendor Red Hat Red Hat Fuse 7version unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-84823
A flaw was found in WildFly. A user with the role, which is the lowest standard Role-Based Access Control (RBAC) role, can exploit a path traversal vulnerability in the operation. By manipulating the parameter, this user can write a copy of the server configuration to an arbitrar
cve.org - NIST NVDVulnerability recordCVE-2026-84823
A flaw was found in WildFly. A user with the role, which is the lowest standard Role-Based Access Control (RBAC) role, can exploit a path traversal vulnerability in the operation. By manipulating the parameter, this user can write a copy of the se
nvd.nist.gov