Bug 2527902 (CVE-2026-84823) - CVE-2026-84823 org.wildfly.core: WildFly: Path traversal in take-snapshot discloses the server configuration to the Monitor role
Summary: CVE-2026-84823 org.wildfly.core: WildFly: Path traversal in take-snapshot dis...
Keywords:
Status: NEW
Alias: CVE-2026-84823
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-03 09:33 UTC by OSIDB Bzimport
Modified: 2026-10-15 23:21 UTC (History)
34 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-03 09:33:49 UTC
There is a flaw in WildFly that allows`take-snapshot` to write a copy of the server configuration to a file the caller names. It takes two parameters that become part of that filename, `comment` and `name`, and it sanitizes only `comment`. A `name` of `../../../../welcome-content/x-` therefore drops the configuration wherever the caller likes.

The operation is available to `Monitor`, the lowest standard RBAC role, and that is deliberate. What is not deliberate is that `Monitor` can now choose a destination it is able to read back. RBAC refuses that role the configuration as a document, and refuses it the credentials inside the configuration. A snapshot is both, byte for byte.


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