CVE-2026-6855

Name: CVE-2026-6855
Creator: NVD / NIST
Published: 2026-04-22T13:16:22.41+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.16%

Last modified Jun 17, 2026

CVE-2026-6855 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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. EPSS estimates a 0.16% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.1/10

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

EPSS Probability

0.16%

5.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Redhat	Instructlab	All versions
Redhat	Enterprise Linux Ai	3.0

References

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

Timeline

Published: Apr 22, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-6855?

How severe is CVE-2026-6855?

CVE-2026-6855 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.

How do I fix CVE-2026-6855?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-6855?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST