CVE-2026-121489 Details
Description
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Apache Juneau. The microservice DirectoryResource does not keep request paths inside its configured root directory. When an application enables the resource's view, upload or delete settings (all off by default), a client can read, write or delete files outside the root, anywhere the server process has access. This issue affects Apache Juneau: through 9.2.0. Users are recommended to upgrade to version 9.2.1, which fixes the issue.
A path traversal vulnerability has been identified in Apache Juneau's DirectoryResource microservice, affecting versions through 9.2.0. The issue arises because the resource does not properly restrict request paths to within its configured root directory. When the view, upload, or delete settings are enabled, a client can read, write, or delete files outside the root directory, depending on the resource's configuration. This vulnerability allows access to any files the server process can reach.
Users are advised to upgrade to Apache Juneau version 9.2.1, which addresses this vulnerability. If an immediate upgrade is not possible, the allowViews, allowUploads, and allowDeletes settings on DirectoryResource should be disabled, or the resource should not be exposed to untrusted clients.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://lists.apache.org/thread.html/j05q7vw08j48o96tdlzcsd4sozx1lyl6 | [email protected] | AdvisoryBundleMailing ListRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Apache Juneau | <= 9.2.0 (semver) |
CPE
Remediation
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Change History
1 change record found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 5, 2026 | New CVE Received | [email protected] |