CVE-2026-6855: InstructLab vulnerable to Path Traversal

April 22, 2026 (updated April 29, 2026)

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.

References

access.redhat.com/security/cve/CVE-2026-6855
bugzilla.redhat.com/show_bug.cgi?id=2460013
github.com/advisories/GHSA-pqmg-c2j8-fq92
github.com/instructlab/instructlab
nvd.nist.gov/vuln/detail/CVE-2026-6855

Code Behaviors & Features

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