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PatchSiren cyber security CVE debrief

CVE-2026-42271 BerriAI CVE debrief

A command injection vulnerability was discovered in BerriAI LiteLLM, a popular open-source library. This vulnerability, tracked as CVE-2026-42271, has a CVSS score of 8.7 and is classified as HIGH severity. The vulnerability was publicly disclosed on June 8, 2026, and added to the CISA Known Exploited Vulnerabilities (KEV) catalog on the same day, with a due date for mitigation set for June 22, 2026.

Vendor
BerriAI
Product
LiteLLM
CVSS
HIGH 8.7
CISA KEV
Listed
Original CVE published
2026-06-08
Original CVE updated
2026-06-08
Advisory published
2026-06-08
Advisory updated
2026-06-08

Who should care

Users of BerriAI LiteLLM, especially those integrating it into cloud services, should be aware of this vulnerability. Given its high severity and potential for exploitation, immediate attention is required to mitigate the risk.

Technical summary

The CVE-2026-42271 vulnerability in BerriAI LiteLLM allows for command injection, which could lead to unauthorized execution of commands on affected systems. This type of vulnerability is particularly dangerous as it can be exploited remotely, potentially leading to system compromise.

Defensive priority

High

Recommended defensive actions

  • Apply mitigations per vendor instructions.
  • Follow applicable BOD 22-01 guidance for cloud services.
  • Discontinue use of the product if mitigations are unavailable.

Evidence notes

The vulnerability affects BerriAI LiteLLM and has been documented in the CISA Known Exploited Vulnerabilities catalog. For more information, refer to resourceLinkAnnotations with id 'cisa-kev', 'nvd', and 'cve-org'.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-42271 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-42271

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-42271 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-42271

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.