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Advisory severityHigh8.1Red Hat Linux

High [CVE-2026-59820] Directory traversal via crafted skill archive upload

This high-severity Red Hat Linux advisory covers CVE-2026-59820 affecting Exploit Intelligence.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-59820 Source published Source updated

VulniPulse record published Record updated

CVE-2026-59820
Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

Summary

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format.

Prior to 1.83.7-stable, LiteLLM Skills archive extraction did not sufficiently validate file paths from uploaded skill ZIP archives, allowing an authenticated user with access to LiteLLM LLM API routes or a key whose allowed_routes includes /v1/skills, anthropic_routes, or llm_api_routes to upload a crafted skill archive containing path traversal entries that could be written outside the intended extraction or staging directory.

This issue is fixed in version 1.83.7-stable. A flaw was found in LiteLLM, a proxy server for Large Language Model (LLM) APIs.

This vulnerability could lead to arbitrary file creation or modification, potentially resulting in system compromise. Exploitation requires the LiteLLM Proxy Server's Skills API (/v1/skills, anthropic_routes, or llm_api_routes) to be enabled and reachable by an authenticated caller.

Red Hat severity: Important — CVSS 8.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H). Weakness: CWE-22.

Affected Red Hat products: Exploit Intelligence. Red Hat lists Lightspeed Core; Red Hat Ansible Automation Platform 2; Red Hat OpenShift AI (RHOAI) as not affected.

Red Hat does not currently list a fixing RHSA for this CVE.

Is CVE-2026-59820 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-59820 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-59820?

Upgrade to a fixed release named by Red Hat:

  • 1.83.7
  • 1.83.7-stable

Confirm against the vendor advisory before you patch.

Affected versions
  • < 1.83.7-stable

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Fixed versions
  • 1.83.7
  • 1.83.7-stable

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Upgrade to LiteLLM 1.83.7-stable or later. Products that use LiteLLM only as a Python SDK (litellm.completion()) rather than running the LiteLLM Proxy Server with the Skills feature enabled are not exposed to this vulnerability, as the vulnerable HTTP upload endpoint does not exist in SDK-only usage.

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

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