CVE-2026-21991: oracle corporation oracle linux Path Traversal

Vulnerability summary

CVE-2026-21991 is a medium (CVSS 5.5) Path Traversal vulnerability in oracle corporation oracle linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 7.9% of scored vulnerabilities.

Timeline

1. 16-03-2026
   PublishedVulnerability first disclosed.
2. 17-03-2026
   Last modifiedVulnerability information updated.

Description

A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names.

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.