Arbitrary Command Execution Vulnerability in LiteLLM Proxy Server by BerriAI
CVE-2026-42271

8.7HIGH

Key Information:

Vendor

Berriai

Status
Litellm
Vendor
CVE Published:
8 May 2026

Badges

📈 Trended📈 Score: 1,270👾 Exploit Exists🟡 Public PoC🟣 EPSS 83%🦅 CISA Reported📰 News Worthy

What is CVE-2026-42271?

false

CISA has reported CVE-2026-42271

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2026-42271 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Affected Version(s)

litellm >= 1.74.2, < 1.83.7

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-42271
Created by HORKimhab

News Articles

favicon imageVenturebeat

Copilot, LiteLLM and the AI trust boundary gap

SearchLeak and a three-CVE LiteLLM chain broke the same AI trust boundary in two weeks. A 5-check audit maps each gap to a CVE, a verify command, and a fix.

favicon imageTechrepublic

CISA Warning: LiteLLM Flaw Could Expose Enterprise AI Gateways

CISA’s LiteLLM warning shows why AI gateways and agents need service account governance, scoped access, credential rotation, and audit trails.

favicon imageHelp Net Security

LiteLLM vulnerability under active attack, CISA warns (CVE-2026-42271) - Help Net Security

A command injection vulnerability (CVE-2026-42271) in BerryAI’s LiteLLM open-source AI gateway is being exploited by attackers.

References

https://github.com/BerriAI/litellm/security/advisories/GH...
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https://github.com/BerriAI/litellm/releases/tag/v1.83.7-s...
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EPSS Score

83% chance of being exploited in the next 30 days.

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 📈

    Vulnerability started trending

  • 🟡

    Public PoC available

  • 📰

    First article discovered by Newsbreak

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

.