CVE-2026-59821Network attack vector

Arbitrary code execution via unchecked guardrail code

Published Jul 8, 2026 · Updated Jul 8, 2026

Code injection in LiteLLM before 1.82.0-stable allows remote authenticated users to execute arbitrary Python through guardrail APIs. The production POST /guardrails and PUT /guardrails/{guardrail_id} paths accepted custom code without the sandboxing and validation applied by the test path, then executed it in the proxy environment. Guardrail-management access is normally required, but deployments without a master key treated callers as proxy administrators, exposing process secrets and permitting proxy compromise.

CVSS severity2.1
Low
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in LiteLLM before 1.82.0-stable allows remote authenticated users to execute arbitrary Python through guardrail APIs. The production POST /guardrails and PUT /guardrails/{guardrail_id} paths accepted custom code without the sandboxing and validation applied by the test path, then executed it in the proxy environment. Guardrail-management access is normally required, but deployments without a master key treated callers as proxy administrators, exposing process secrets and permitting proxy compromise.

The record

CVE
CVE-2026-59821
Published
Jul 8, 2026
Updated
Jul 8, 2026
Vendor
Berri AI
Product
LiteLLM
Classifications
CWE-94, T1059.006
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.82.0-stable

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Berri AI · LiteLLMversion=< 1.82.0-stable

Published CVSS scores

2.1GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.006Command and Scripting Interpreter: Python

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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