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.

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 arbi…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.000 (3.6th percentile) — read the EPSS interpretation.

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.

Affected products

Red Hat Enterprise Linux Ai (Rhel Ai) 3
Redhat Enterprise_linux_ai — versions 3.0
Redhat Instructlab

Weakness classification (CWE)

CWE-22 — Path Traversal

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
secalert@redhat.com (x_refsource_REDHAT, 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.