Vulnerability Intelligence

CVE-2026-40217

HighExploitedPublic exploit

LiteLLM has a sandbox escape in custom-code guardrail

Published May 11, 2026 · Updated Sep 10, 2026 · Also known as GHSA-wxxx-gvqv-xp7p, PYSEC-2026-2601

Key Facts

Patch immediately

CVE-2026-40217 is a high-severity vulnerability (CVSS 7.5 v4) affecting LiteLLM, airflow-3 (chainguard), litellm-1.83 (minimos) and 2 more products.
It is exploited in the wild, listed in Industry KEV feed since Jul 30, 2026. Public exploit code is available.
EPSS estimates a 3.4% probability of exploitation in the next 30 days.
Fixed versions are available, including airflow-3 3.2.2-r7, airflow-3 3.3.1-r0, ansible-automation-platform 26/lightspeed-chatbot-rhel9:1780102732.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v4

7.5

CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS (30-day exploit likelihood)

3.4%

Higher than 88.6% of all scored CVEs

Exploited in the wild

Yes

1 catalog listing

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2026-40217 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/test_custom_code URI.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Jul 30, 2026	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

9 affected entries in total

Product	Affected versions	Fixed in
LiteLLMLitellm	>= 1.81.8, >= bb0639701796218a3447160e55c0f1097446e4e6085df7dfd39f476d4143743f	2026-04-08
airflow-3chainguard	See advisory	3.2.2-r7
litellm-1.83minimos	See advisory	1.83.10-r0
ansible-automation-platformredhat	See advisory	26/lightspeed-chatbot-rhel9:1780102732
rhoai/odh-llama-stack-core-rhel9:1782310008redhat	See advisory	n/a

Patched Releases

airflow-3

3.2.2-r7, 3.3.1-r0

ansible-automation-platform

26/lightspeed-chatbot-rhel9:1780102732

LiteLLM

1.83.10, 2026-04-08

litellm-1.83

1.83.10-r0

Timeline

Publicly disclosed
May 11, 2026
Added to Industry KEV feed
Jul 30, 2026
Last updated
Sep 10, 2026

Weakness Type

CWE-94 Improper Control of Generation of Code ('Code Injection')
CWE-420 Unprotected Alternate Channel
CWE-913 Improper Control of Dynamically-Managed Code Resources

References

advisoryRHSA-2026:24866
advisoryRHSA-2026:30056
advisoryGHSA advisory
advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2026-40217
articlehttps://github.com/BerriAI/litellm/releases/tag/v1.83.10-stable

8 more references in the full CVE brief

FAQ

Common Questions.

LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/test_custom_code URI.
Affected: LiteLLM versions >= 1.81.8, >= bb0639701796218a3447160e55c0f1097446e4e6085df7dfd39f476d4143743f; airflow-3 (chainguard); litellm-1.83 (minimos), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jul 30, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including airflow-3 3.2.2-r7, airflow-3 3.3.1-r0, ansible-automation-platform 26/lightspeed-chatbot-rhel9:1780102732.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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