CVE-2026-6855 — HIGH (7.1) — White Hats Nepal

Vulnerability Description

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.

CVSS Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Redhat	Instructlab	-
Redhat	Enterprise Linux Ai	3.0

Related Weaknesses (CWE)

CWE-22

References

https://access.redhat.com/security/cve/CVE-2026-6855Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2460013Issue TrackingVendor Advisory

FAQ

What is CVE-2026-6855?

CVE-2026-6855 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 ...

How severe is CVE-2026-6855?

CVE-2026-6855 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-6855?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Instructlab, Redhat Enterprise Linux Ai.