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Vulnerabilities

Vulnerability · CVE-2026-84823

A flaw was found in WildFly.

Published Oct 15, 2026 · catalog updated Oct 16, 2026 · Red Hat Red Hat Enterprise Linux 8

Check if you run it

No confirmed exploitation is on record for CVE-2026-84823. EPSS is 0.34%. Act only if a listed version of Red Hat Red Hat Enterprise Linux 8 is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.34%
Remediation
Advisory link
Affected products
vendor Red Hat Red Hat Enterprise Linux 8 · vendor Red Hat Red Hat Enterprise Linux 9 · vendor Red Hat Red Hat Fuse 7

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • 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

How to fix CVE-2026-84823

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-84823. EPSS is 0.34%. Act only if a listed version of Red Hat Red Hat Enterprise Linux 8 is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.34%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

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.

  1. 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

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
  • FIRST EPSSExploitation probabilityCVE-2026-84823

    30-day exploitation probability 0.3%

    first.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

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.