CVE-2026-6855Instructlab: instructlab: path traversal allows arbitrary directory creation and file write
- 7.1HighCVSS base score
- 0.16%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By redhat
Published
- 2 days later
· 2 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Analyzed | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.16% · top 94% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
Red Hat · Red Hat Enterprise Linux AI (RHEL AI) 3
All versions: affected
Red Hat · Red Hat Enterprise Linux AI (RHEL AI) 3
All versions: affected
Red Hat · Red Hat Enterprise Linux AI (RHEL AI) 3
All versions: affected
Red Hat · Red Hat Enterprise Linux AI (RHEL AI) 3
All versions: affected
Red Hat · Red Hat Enterprise Linux AI (RHEL AI) 3
All versions: affected
Red Hat · Red Hat Enterprise Linux AI (RHEL AI) 3
All versions: affected
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIinstructlabGHSA-pqmg-c2j8-fq92 (opens in a new tab)
What to do
Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
References
References2
- https://access.redhat.com/security/cve/CVE-2026-6855 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2460013 (opens in a new tab)issue-trackingx_refsource_REDHAT
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-24736 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-pqmg-c2j8-fq92 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-6855)Record last updated .