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

🔥 Trending now📈 Trended📈 Score: 1,200👾 Exploit Exists🟡 Public PoC🟣 EPSS 60%🦅 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 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.

2 days ago

favicon imageSwapupdate

LiteLLM Flaw CVE-2026-42271 Exploited in the Wild, Chains to Unauthenticated RCE

Ravie LakshmananJun 09, 2026Vulnerability / Artificial Intelligence

3 days ago

favicon imageIt Security News

LiteLLM Flaw CVE-2026-42271 Exploited in the Wild, Chains to Unauthenticated RCE - IT Security News

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added a high-severity flaw impacting BerriAI LiteLLM to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. The vulnerability, tracked as CVE-2026-42271 (CVSS score: 8.7), is a command…R...

3 days ago

References

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

EPSS Score

60% 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

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