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CVE-2026-35029

Litellm remote code execution

8.8 HIGHEPSS 3.98%
  1. Published6 Apr 2026

Description

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.83.0, the /config/update endpoint does not enforce admin role authorization. A user who is already authenticated into the platform can then use this endpoint to modify proxy configuration and environment variables, register custom pass-through endpoint handlers pointing to attacker-controlled Python code, achieving remote code execution, read arbitrary server files by setting UI_LOGO_PATH and fetching via /get_image, and take over other privileged accounts by overwriting UI_USERNAME and UI_PASSWORD environment variables. Fixed in v1.83.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Litellm< 1.83.0

Remediation

Fixed in
Litellm≥ 1.83.0

References

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Frequently asked

Is CVE-2026-35029 being actively exploited?

CVE-2026-35029 is not in the CISA KEV catalog. Its EPSS exploit probability is 3.98%.

How severe is CVE-2026-35029?

CVE-2026-35029 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 3.98% probability of exploitation.

Which products are affected by CVE-2026-35029?

Affected products include Litellm.

How do I fix CVE-2026-35029?

Upgrade affected software to a fixed version, for example Litellm 1.83.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-35029 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.