Bug 2460013 (CVE-2026-6855) - CVE-2026-6855 instructlab: InstructLab: Path traversal allows arbitrary directory creation and file write
Summary: CVE-2026-6855 instructlab: InstructLab: Path traversal allows arbitrary direc...
Keywords:
Status: NEW
Alias: CVE-2026-6855
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-21 08:38 UTC by OSIDB Bzimport
Modified: 2026-04-22 12:25 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-04-21 08:38:36 UTC 
Path traversal via unsanitized logs_dir in chat session handler. logs_dir passed directly to os.makedirs() and file path construction without boundary validation. Enables arbitrary directory creation and file write.

Affected file: src/instructlab/model/chat.py lines 858-863.
Upstream notification: security-reporting bounced.
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