Is CVE-2026-6855 actively exploited?

No active exploitation of CVE-2026-6855 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-6855 be exploited remotely?

No. CVE-2026-6855 requires local access to exploit.

What is the CVSS score of CVE-2026-6855?

CVE-2026-6855 has a CVSS score of 7.1 (HIGH).

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HIGH

CVE-2026-6855

CWE-22Published: April 22, 2026· Updated: Apr 22, 2026

7.1

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:3.1th

Official 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.

NVD Source

Technical Analysis

CVE-2026-6855 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 7.1.