CVE-2026-40217: exploitation status and patch state

CVE-2026-40217 · CVSS 8.8 HIGH · EPSS 16%

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

Is CVE-2026-40217 exploited?

• Not in the CISA KEV catalog.
• EPSS puts exploitation in the next 30 days at 16%.
• Public exploit code: none found in monitored sources.
• Public detection rules exist.

Which products and versions are affected?

• BerriAI · LiteLLM · bb0639701796218a3447160e55c0f1097446e4e6085df7dfd39f476d4143743f

Is there a patch?

BerriAI's record doesn't name a fixed version.

What PlainSec published about CVE-2026-40217

• Stolen LLM keys now feed a resale economy (2026-11-02)

Primary sources

• NVD record
• Nuclei template

What this record does not say

• No patch identifier.

KEV and EPSS are re-checked daily. Record last updated 2026-11-02.