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TI-2026-06013 Aliases CVE-2026-6855GHSA-pqmg-c2j8-fq92

Instructlab: instructlab: path traversal allows arbitrary directory creation and file write

Priority LOW 32CWE-22Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00164 5th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3——No fix listedCNA
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3——No fix listedCNA
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3——No fix listedCNA
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3——No fix listedCNA
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3——No fix listedCNA
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3——No fix listedCNA
—instructlab (PyPI)up to 0.26.1—No fix listedGHSA-pqmg-c2j8-fq92
  • Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • instructlab (PyPI) Vendor— Affected up to 0.26.1 Fixed in — No fix listed GHSA-pqmg-c2j8-fq92

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:redhat:instructlab:-:*:*:*:*:*:*:*not specified by NVDVulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_ai:3.0:*:*:*:*:*:*:*3.0VulnerableRed Hat
  • cpe:2.3:a:redhat:instructlab:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_ai:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-6855
  2. 2026-10-03 Alias added: GHSA-pqmg-c2j8-fq92

References

Advisory 3

Other 1

  • TI-2026-35991 Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks KEVCVSS 3.1MEDIUM 6.5
  • TI-2026-06016 Instructlab: instructlab: arbitrary code execution due to hardcoded `trust_remote_code=true` CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences