Paper/Archive/CVE-2026-121489

CVE-2026-121489

Apache Software Foundation Apache Juneau — Apache Juneau: Path traversal in DirectoryResource allows reading files outside the configured root directory

CVSS 10.0

critical.is priorityof 100

CVSS 10.0 (CNA)10.0 / 10 × 3030.0 Not in CISA KEV+300.0 No EPSS score.000 × 200.0 No public exploit+100.0 SSVC exploitation: unknown+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

Apache Juneau< 9.2.19.2.1CNA

Scores by source

apache (CNA)10.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

References

advisorylists.apache.org/thread.html/j05q7vw08j48o96tdlzcsd4sozx1lyl6