GHSA-3926-2jvf-fg29: Duplicate Advisory LiteLLM Has A Sandbox Escape Vulnerability

HIGH
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CVSS 8.8
CWE-420
Published
Advisory Summary

GHSA-3926-2jvf-fg29 is a HIGH (CVSS 8.8) litellm has a sandbox escape vulnerability (CWE-420: Unprotected Alternate Channel) affecting Duplicate Advisory libraries in the PyPI ecosystem. The issue involves litellm has a sandbox escape in custom-code guardrail. Remediation is available by upgrading affected packages to version 1.83.10.

GHSA-3926-2jvf-fg29 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-3926-2jvf-fg29
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-420: Unprotected Alternate Channel
Affected Product Duplicate Advisory
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix GHSA-3926-2jvf-fg29

To remediate this vulnerability, upgrade all affected Duplicate Advisory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

litellm fixed: 1.83.10 
pip install litellm>=1.83.10
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show litellm

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-3926-2jvf-fg29, inspect your installed packages using pip:

pip show litellm

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.83.10), your application is affected.

Note: The pip show litellm command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-420: Unprotected Alternate Channel, where the product protects a primary channel, but it does not use the same level of protection for an alternate channel. In Duplicate Advisory, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wxxx-gvqv-xp7p. This link is maintained to preserve external references. ### Original Description LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/test_custom_code URI.

GHSA-3926-2jvf-fg29 Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
1.83.10
Product / Package Ecosystem Affected Versions Fixed Version
litellm
pypi/litellm
PyPI
≥ 1.81.8
< 1.83.10
1.83.10

References

NVD — GHSA-3926-2jvf-fg29 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-40217
www.x41-dsec.de/lab/advisories/x41-... WEB
https://www.x41-dsec.de/lab/advisories/x41-2026-001-litellm

Frequently Asked Questions

What is GHSA-3926-2jvf-fg29?
GHSA-3926-2jvf-fg29 is a security vulnerability in Duplicate Advisory involving LiteLLM has a sandbox escape in custom-code guardrail under CWE-420: Unprotected Alternate Channel.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 1.83.10 across affected packages: litellm.
What version fixes GHSA-3926-2jvf-fg29?
Upgrading to 1.83.10 (or the latest patched release for your respective branch) resolves the vulnerability.
Is litellm affected?
Yes, litellm is affected in releases prior to 1.83.10. Upgrade your dependency to 1.83.10 or later.
What is the CVSS score of GHSA-3926-2jvf-fg29?
GHSA-3926-2jvf-fg29 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with GHSA-3926-2jvf-fg29?
GHSA-3926-2jvf-fg29 is classified under CWE-420: Unprotected Alternate Channel (The product protects a primary channel, but it does not use the same level of protection for an alternate channel.).
How can I check PyPI dependencies for GHSA-3926-2jvf-fg29?
Run the dependency tree command: 'pip show litellm'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-3926-2jvf-fg29",
  "modified" : "2026-05-11T16:17:14Z",
  "published" : "2026-04-10T15:31:57Z",
  "withdrawn" : "2026-05-11T16:17:14Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: LiteLLM has a sandbox escape in custom-code guardrail",
  "details" : "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-wxxx-gvqv-xp7p. This link is maintained to preserve external references.\n\n### Original Description\nLiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/test_custom_code URI.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "litellm"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.81.8"
      }, {
        "fixed" : "1.83.10"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-40217"
  }, {
    "type" : "WEB",
    "url" : "https://www.x41-dsec.de/lab/advisories/x41-2026-001-litellm"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-420" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-11T16:17:14Z",
    "nvd_published_at" : "2026-04-10T14:16:36Z"
  }
}