Path Traversal in Red Hat Enterprise Linux Ai (Rhel Ai) 3
CVE-2026-6855
A flaw was found in InstructLab. A local attacker could exploit a path traversal vulnerability in the chat session handler by manipulating the `logs_dir` parameter. This allows the attacker to create new directories and write files to arbitrary locations on the system, potentially leading to unauthorized data modification or disclosure.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (5.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: -0.001
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-6855 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-6855?
- CVE-2026-6855 is a high-severity vulnerability in Red Hat Enterprise Linux Ai (Rhel Ai) 3, classified under Path Traversal. CVSS score: 7.1/10. Published 2026-04-22.
- How severe is CVE-2026-6855?
- High severity. CVSS v3 base score is 7.1 out of 10.