Vulnerability · Published Nov 5, 2026 · Assigned by apache
CVE-2026-121489Apache Juneau: Path traversal in DirectoryResource allows reading files outside the configured root directory
Critical 10.0
In plain English
A critical-severity path traversal in Apache Juneau from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Juneau | 0 – before 9.2.1 |
| Apache Software Foundation | Apache Juneau | 0 – before 9.2.1 |
Weakness: CWE-22 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H